John and Louise talked about it for a bit and what they were going to do. Louise was clearly scared but what about John? It was years before she was supposed to have his sister, let alone him. He asked her to leave him for a bit so he could think.
"I can't be a father...Especially not with my mother." His only solace was that he didn't have to worry about any paradoxes, once he returned everything would be normal. He decided to pull out the instructions of the machine and read over them and wanted to see if there was anything he could do. While reading he saw what was on the back of the machine but...with something added: "No matter what happens, your actions cause no problems or paradoxes in the present when you return. Your actions will change the future but will prevent the universe from collapsing on itself. WARNING: THIS CAN RESULT IN CHANGES TO THE USER AND REALITY."
John's heart sank reading those added words. As he kept reading he then began to wonder why he didn't start changing immediately? He found his answer: "Any reality changes may take time to prep and requires the user to be alone for sufficient amount of time and when no one can interfere with the changes." As he read this he noticed something was wrong, the nails on his left hand looked longer, more...oh no...
John dropped the instructions and time machine as he watched his hand become slimmer and daintier. John grimaced in slight pain watching it fully change, "NO! PLEASE...STOP!" John screamed out to no avail as his hand feminized. No one however heard it as Louise's parents were out of town and she went to go for a walk to clear her head. His hand was now smaller, his fingers were longer, and his nails well maintained and long. The soft appearance was clearly of a female and soon his other hand began the same change.
"There has to be a way to stop thi-AAAAGGGGHHHH!" John suddenly doubled over in pain but also felt a slight amount of pleasure. His stomach began to gurgle and flatten. John was never chubby nor was exactly built but as his stomach flattened, it also became more toned and strengthened. John Slowly lifted his shirt and was both horrified and puzzled by his stomach. It was toned, sexy and very feminine. John realized what the machine was doing, it was changing him into a girl. "Is it...changing me into my sister?"
John lost his train of thought though as a wave of pleasure suddenly surged through him, eliciting a moan much higher than he normally makes. His body had begun to change faster as his feet began to hurt and changed into much more feminine proportions. Much like his fingers, they were well manicured and taken care of. The rest of his arms and legs began to lose their hair and slim down. His legs began to get longer while the rest of his body shrunk. He quickly went from being easily 6' tall to only being 5' 5".
Once those sets of changes completed, John was given another second to look at himself where he made another realization. "I'm not becoming my sister...its just changing me to a female version of myself." His sister was abnormally tall for girls and he was currently fairly average in height for the opposite gender. Before he could think more about he felt his hair dropping down to below his shoulders. It became long and lush and changed from brown to a warm auburn.
As he stood in disbelief, another more powerful wave of pleasure went through him. His thighs began to fill with fat which caused his hips to expand into large child bearing proportions. As his thighs increased in size, his dick began to throb as it was crushed between his plump and sexy thighs. Unlike the previous times, the wave of pleasure continued to ripple through his body. "Oh god...it feels...so...gooooooooddddddddd." John was still scared with what was happening to him but he couldn't deny that it felt amazing.
The pleasure moved up slowly and soon his ass was filling up much like his thighs, much faster than before. His back arched heavily to really show off the curve his backside now developed. With one hand, he idly squeezed one of his bountiful cheeks while his waist caved in to give him a perfect hourglass shape. His dick throbbed harder. John couldn't hold back much longer and moved his hand to his rod to slowly stroke it. John was forced onto his knees from the pleasure. "AAAAAHHHHH" John moaned out in a high pitched but sultry feminine voice. *Why bother? I've got no way to stop it...might as well enjoy it...* John thought to himself but quickly shook his head. "Where did that come from?!"
However, before he could process further, a tingling sensation began on his face. Every feature began to soften. His cheeks rounded off, his nose got smaller, while his eyes enlarged slightly. The tingling began to concentrate on his lips which quickly puffed out but remained completely natural. If he could see his new face in a mirror, it would have been one of the most beautiful girls he'd have ever seen. John began to stroke himself harder as the tingling moved down to his chest.
He knew what came next, his chest began to grow as the muscle in his pecs slowly changed to fat giving him small A cup breasts but those wouldn't stay long. John quickly removed his shirt and grabbed one of the small breast when he felt a wave of fat begin to inflate his developing boobs. Subconsciously, he squeezed the breast hard almost as if to pull more fat into them. Soon they were perky Cs, then Ds, and then DDs. John didn't know how big they were as his mind only had one goal: Cumming.
*Moan* "Oh god i'm so...CLOSE!" His dick throbbed hard as he came. He shot out at least 12 loads of cum as his balls emptied themselves. Once they stopped, the final change started. his balls quickly sucked up and changed to a working set of ovaries. A slit began to open where they once were as his dick continued to throb and shrink. "Please..." John begged for it to be over as his dick finally finished becoming his Clitoris. John was now completely a she. Her boobs ballooned out another cup size and her ass inflated slightly again.
John was on her hands and knees as the world began to spin around her. It was the same feeling she had when she first used the Time Machine. She felt something building up in her nether regions. It was getting hot and her new pussy was dripping. John tried sitting back up and resist, but instead rushed a hand down. She began masturbating furiously quickly bringing her to the edge. The new girl finally came and hard. The pleasure was beyond anything John had felt in her life. The world was spinning quickly as she began to fade out noticing the new clothes being applied to her body, ...they...looked...sexy... Out of the corner of her eye, John thought she saw a heavily pregnant woman walk into the room. Once the orgasm finished, John blacked out as reality continued to settle itself taking her to the future and changing everything about her new life.
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John woke up confused and with a massive headache but also felt her new assets swing in the air. She quietly walked to the bathroom to see the dam- "HOLY SHIT!" John screamed out as she finally got to look at her new body. For still being a teen, she was remarkably developed...more than her mother was at 16 and she was amazingly beautiful. John quickly shook her head, that was how she got into this mess in the first place. Wait...Where is the Time Machine? "Oh No...I dropped it..." The Time Machine was now gone and who knows where it was.
"SARAH! I'M HOME!" A scream came from downstairs. "That must be my new name." John ran down the stairs and saw her mother, clearly older but looked to be in her early 30s instead of being 40, all but confirming the Machine had sent her back into the future. "Happy Birthday, baby-girl." Louise hugged her daughter and kissed her on the forehead.
"It's my birthday?" John questioned. "Well, I didn't give birth to you on another day? If it wasn't for the boy from school you wouldn't exist." Louise answered. Okay...so the machine changed it to where he did not knock up his mother but instead some random person from school. John felt a shiver go down her spine, it...turned her on? Oh god what else did that machine change? "I know you've heard this story many times, but when I found out her left the house and moved away I was incredibly angry. I found a box that I assumed he had left and threw it across the room multiple times. The thing shattered into a ton of pieces but I needed to take it out on something." John couldn't believe it, the machine was destroyed by her mother. "But, in the end I was incredibly happy because I had you."
John had so much going through her head as her mother spoke. What was she going to do? "You know, it was my 16th birthday when I got pregnant with you. Look...I know you have been planning this date for some time with your boyfriend tonight, but please be careful while I'm out tonight. I don't want you to deal with the same problems I had to face. I managed to get by raising you but my life was difficult for quite a few years. In any case, I hope you two have a good night Sarah." Louise told John while the name Sarah continued to ring through her mind.
At least she still cared for her but did she say Boyfriend? "Boyfriend?" John questioned getting a little dazed from new information entering her head.
"Did you seriously forget? You know for as smart as you are sometimes you forget things so easily. Your longtime boyfriend Kevin, remember?" John recognized the name. Back in the correct timeline, Kevin was his best friend and also an amazing athlete. John suddenly had memories bloom in her head with him. Kevin was very similar in this reality but things had changed from being best friends to being a young couple. Conversations about long term commitments and having a family appeared, something Sarah had thought quite a bit about.
"Yeah, I remember just...got up from a nap" Sarah said to her mother. Louise smiled, "Just be careful. I love you! I'm getting ready to leave again for tonight. I'll be back later!"
"Okay!" Sarah kissed her mother on the forehead and began walking back up the stairs. "Alright, I need to get ready for tonight. Glad my mother is gonna be gone most of the night." Sarah walked into the bathroom again and began getting ready for the night, applying makeup and such for Kevin tonight. "Alright, now for the 'stash'." Sarah reached under the counter and pulled out a pack of condoms and a bottle of Birth Control. "Hmmmm, What to pick for tonight..." Thoughts entered her mind about what Kevin could do with her. Sarah, unable to contain herself groped her breast through her shirt and bra. She imagined getting fucked in multiple positions but also that even with the amount of times they've made love, its always with a condom. Sarah wanted to feel it fully which is why she bought the birth control. But the recent conversations with Kevin brought a new desire. Sarah wanted a kid.
John then suddenly shook her head. Fuck...What's going on right now? Why am I having these feelings and thoughts? And why am I trying to decide between these two things? John thought to himself and quickly walked out of the bathroom and back down the stairs. Okay, she was now drop dead gorgeous, was having unwanted thoughts and feelings...and had no way to return to being a man. "I need to get out of here and see if that shop exists in this reality and fix this." Then the doorbell rang.
John went to open it and was shocked to see...Kevin. "Hey, beautiful. Happy Birthday. " Kevin said in his usually low voice and handed her a bouquet of roses. John looked at her 'boyfriend' and was getting hot quickly...he looked even better than he did in the old reality. Whether that was due to her new feminine urges or actually changed she couldn't tell. John wanted to say something but she couldn't. Kevin walked in and John for some reason followed him to the couch in the living room.
The conversations were awkward at first for John to say the least. They talked about high school life and their relationship. John was both nervous yet comfortable with Kevin, something about him calmed her down and let her forget all the worries she had. As the night drew long and after dinner, John thought Kevin was about to leave when he got up but instead moved closer to her. John looked into his eyes, "So...want to really celebrate Birthday girl?" Kevin asked quietly. John's heart was racing, she had to stop him, she had to find that shop, she had to... Without hesitation Kevin pulled her closer and began to kiss Sarah. She wrapped her arms around him while Kevin lifted her up bridal style. Sarah wasn't going to stop him, she had to get laid.
Soon, they were in her bed getting hot and heavy. When Sarah pushed him off and said "Your clothes better be off by the time I get back." Sarah walked to her bathroom and slowly took off her clothes and put on a sexy robe. If John had been thinking, he would have recognized it was very similar to the one Louise had on that night but Sarah had no knowledge of that night. How could she if she wasn't born yet? Instead she took one look back at the counter. She thought about at least grabbing the condom since it was too late for the pill but..."Fuck it. I'm ready."... she walked back to the counter and pulled out another item. It was from a local "magic" shop according to the label and it was another pill bottle. There was only one pill in it and it read: "FERTILITY PILL: Will increase the likelihood of becoming pregnant and prevent pregnancies over twins. Effects are immediate and will last until successfully 'knocked up'." The bottle had been here for as long as she could remember. Sarah dumped the pill in her hand and quickly swallowed it. Immediately she got incredibly horny and wet, slowly rubbing her slit. An imagine of her pregnant body appeared in her mind which turned her on even more. She smiled and began walking back to her room, her breasts bouncing the entire way.
Sarah stood in the doorway looking at her boyfriend naked in the bed. Without talking, she began to walk towards him and untied the robe in a similar fashion to Louise 16 years ago. Kevin was getting hard quickly as she made sure to draw out the walk. Sarah let it fall to the floor exposing her bountiful breasts which slightly jiggled as she walked closer to Kevin and got in the bed with him. Kevin quickly got on top, kissing her and groping her breast, "Are you on the birth control pill?" Kevin asked. Sarah couldn't lie to him and said no which Kevin smiled and said "Good...Hope you're ready for a night to remember." He then roughly groped one of her breast eliciting a high moan from Sarah.
Once again, John took over again but was...dazed, his memories were foggy at best, most having been changed or replaced to fit Sarah. Kevin began to line up his large member to Sarah's slit. John tried to resist but...it felt so good. Kevin slowly entered her and thrusted quickly and forcefully. Kevin and Sarah has slept with each other before but tonight was different. John was losing his mind quite literally. Every thrust changed another memory, another desire. John's mind focused on an image of his old self but it slowly turned into one of her new body and then of her pregnant. As she neared orgasm, John had the same thoughts Sarah did. She wanted to be a mother. John finally gave in, "YES KEVIN! KEEP GOING! AAAAAAAHHHHHHHHHH!" Sarah orgasmed as John faded completely from existence. Sarah was all that was left, and she was about to be knocked up.
Sarah's large breasts bounced up and down as Kevin kept up the pleasure forcing moans from Sarah and eventually a second orgasm. Sarah was swapped on top and rode him hard. His strength and large member kept Sarah stimulated as he squeezed one of her E cup breasts and her large ass. Sarah was moaning loudly as the bed creaked from the weight of the two lovers. She was shaking her hips as she bounced up and down causing Kevin's dick to throb hard as he approached orgasm. Neither had realized almost half an hour had passed. "Sarah...I'm...I'm about to cum...Where do you want it?" Sarah didn't even need to think about Kevin's words. "CUM INSIDE ME! EVERY LOAD TONIGHT! KNOCK ME UP!" Kevin nodded and smiled, until he was finally on the brink.
Kevin slammed Sarah down one last time as he finally let go. A torrent of virile sperm was shot into Sarah's womb and it kept going. Sarah felt the warm liquid fill her up and was never as excited as she was before. Another wave of orgasm shook over her, causing more cum to shoot out from Kevin. "AAAAAAAHHHHHHH, that's it...make me like my mother..." Sarah breathed to Kevin. She knew the pill was working just from the images appearing in her head and her hormones kicking into overdrive. After taking a moment to catch their breathes, Sarah got back below Kevin saying "Come on, the night is still young and you've clearly got a few rounds left in you."
Kevin immediately got to work again while Sarah grabbed one of the poles on her bed frame. He went and rubbed her clit and breasts forcing Sarah to scream even louder in pleasure. It felt so good and she never wanted it too end. Another half hour passed with both still in the same position but neither cared about position, the pleasure was amazing. Sarah had wrapped her legs around Kevin as he once again neared orgasm. Kevin screamed out continuing to thrust as he came filling up Sarah again until her stomach was slightly inflated. She immediately got in doggy style as Kevin went in for another round.
What neither knew was Louise had returned home and wasn't surprised to hear the screams of pleasure. "Ah, young love." she mused as the bed continued to creak. Louise entered the bathroom to take off her make up and noticed the unopened bottle of birth control and pack of condoms. She also noticed the robe she had made to remind her of the night she got knocked up with Sarah was gone. Louise turned her head to the loud noise as Sarah screamed in pleasure "CUM INSIDE ME! EVERY LOAD TONIGHT! KNOCK ME UP!"
Louise sighed out loud and slightly smiled. "Well, guess the expression is true, like mother like daughter. That apparently goes for our desires in life. I remember wanting a kid at her age too...At least Sarah's doing it with someone she loves and not a one night stand. I'll never be able to thank that boy John since he 'ran' off...but I can congratulate Sarah." Louise picked up the Fertility pill bottle. "Seems my plan worked. She'll be just as great of a mother as me." She smirked. "Don't worry Sarah, the time machine is broken, but it was after I saw what happened to John."
Louise didn't know what the box was, since it didn't work but one day in the middle of her pregnancy, it lit up. She typed in the date John disappeared and saw what really became of him. After returning, she immediately went to the magic shop and saw the bottle of Fertility pills and had an idea. She would raise Sarah and leave this bottle around and "inadvertently" convince her to use the pill. Once she returned, she waited until the creation date of the machine, bought the time machine, and destroyed both of them. "You won't be alone, I had some fun of my own tonight with the other pill." She had been wanting another child for awhile now and knew Sarah would probably use it tonight, even if she really wanted her to wait until she was older but wasn't going to stop her. Louise went up to her bedroom to get some sleep as the two lovers kept going well into the night.
By 2 am, Kevin was finally spent and so was Sarah. Her body had tired out and she was no longer abnormally horny, signaling the pill had worked and she was pregnant. "I can't wait to be a mother...Especially since it will be with Kevin." Sarah said quietly to herself as sleep overtook her, though made slightly difficult by Kevin still rubbing her large round breasts.