The more Erika was trying not to think about her bloated belly, the more convinced she was that things were going much faster for her than it did for Melissa. It would make sense after all, since both Emily and herself were exposed to the full salve and more, whereas Melissa had only been exposed to the vial that fell in the swimming pool. Erika and Emily had been irrevocably transformed - not only their sex drive now shooting through the roof but also changing their bodies on a fundamental level.
Looking down and pretending to play with her food, she gave a quick glance at her sensitive chest and saw the shape of her nipples starting to slightly tent the front of her shirt. At this rate, she would be found out before the end of the day! She turned to Emily:
"Listen, I need to go home", she said under her breath. "I don't want my boobs to grow big in the middle of class."
Emily was fidgetting on her seat as well. "Can I... can I come with you? My crotch feels weird. I think I'm going to cry..." she said with a sniffle.
Erika nodded, and the two left the cafeteria and arranged with the infirmary to leave early. Erika was only hoping that the school would not notify too quickly her mother about her recent absences and faked illnesses; eventually, it was going to add up.
The two girls hurried along the walk to Erika's house, where Emily's mom would pick her up later. They would surely be running if not for Erika that had to force herself to slow down, as each step sent painful throbs in her chest as though they had increased in weight. The sooner she would be home, the sooner she could get her hands on the salve again and spray herself to make all of that disappear though, Erika remembered. It would probably make her penis grow back even bigger, but she would no longer be impregnated, right?
As soon as the two friends entered the house and locked the door, Erika rushed to the living room, rumaging through the couch.
The salve was nowhere to be found, even though she was certain this is where she had left it - just after spraying Emily the day before. Erika turned pale.
"I... I can't find it. I don't know what to do Emily!"
"Maybe, maybe your mom put it back in your bedroom?" Emily hesitated with her shy voice.
Both girls went to Erika's bedroom, looking thoroughly through her drawers and closet, to no avail. As the hour passed, Erika's suspicion were confirmed as her sensitive breasts began swelling a little, painfully constricted in her shirt.
"Look, Emily! It's... it's getting worse!" she whimpered while she unbuttoned it to release the pressure. The two orbs spilled on her chest, the areola visibly puffed up around long nipples.
Emily turned red, caught between the anguish of her friend and the intense feeling of arousal that was overcoming her body. She felt the thing between her legs stir again, quickly tenting her panties, and burst out in tears.
"I'm sorry Erika, it's my fault! It's because of this thing. I hate it, it's so ugly and annoying!" she sobbed as she sat on the bed.
Erika stopped thinking about herself for a second, feeling terrible for Emily. It was actually her own fault if Emily was in this situation.
"There there, it's going to be okay Emily, things will work out. I didn't want to frighten you." Erika said softly, filled with guilt. She sat on her knees in front of Emily, lifting up the skirt.
"Do you want me to make it go away? You will feel much better. I know this thing is upsetting you, but it does feel good afterwards, right? I can help you with that..." Erika whispered.
Emily stopped sobbing and slowly nodded. "Yes, make it go away please!"
Erika pulled down Emily's panties and lifted the skirt more, revealing a thick little dick maybe three or four inches long. She began licking it gently and wrapped her lips around its head; Emily immediately started moaning, and a gush of pre filled Erika's mouth.
As Erika gulped down the fluid, the substance and pheromones slowly took a hold of her and her coy tasting turned to hungry sucking. It was addictive, and the sensation was making her forget her bloated body for a moment. She could even long to be filled again, when she had felt full and complete after Emily had mated with her.
Emily's cock throbbed and hardened even more as its head turned a little pointy and a small knot appeared at the base.
"Oh no, it's happening again!" she whimpered between two moans.
"Sshhh, it's ok now" Erika whispered as she was catching her breath. She got up on her knees and grabbed Emily's chin, kissing her hungrily. Emily tensed a little as she felt her own juices over her tongue, then relaxed. She wrapped her arms around Erika and pulled her for an embrace, savouring the feeling of Erika's tongue against her own.
Erika pressed her body over Emily's, her oversensitive nipples hard against her friend's, and she began frotting against her knot. Emily let got of the kiss to moan louder, her throbbing member smearing pre all over Erika's bloated belly. She barely registered when it brushed against something - small bumbs quickly growing into teats.
Emily's hips bucked in anticipation and got caught between Erika's legs, who let out a lewd moan as she let it slide into her. It felt just as good as ealier. Emily felt her knot inflate rapidly and tried to pull back, but was already stuck.
"I.. I don't want it to grow bigger again, Erika..." she panted.
"But... I don't think it's... going to happen?" Erika let out between her moaning. "My belly is already full so I don't think mating with me will make it worse for you... right?"
Emily couldn't answer. All she could do was grab onto Erika as she felt her burning cock swell even more, stretching Erika's insides. At the same time, Erika's growing belly was now bulging more clearly, making the canine teats extend outwards.
The sight was too much for Emily and her hips bucked as a surge of cum shot through her dick into Erika's womb, soon followed by another.
"Aah! Emily!" Erika moaned as she arched her back in bliss. An orgasm hit her, making her insides clench tightly around Emily's rocket, and then another. And another. Each time she thought it was dying down, her walls would cling tighter and send another wave of bliss up her spine.
Just when Emily thought Erika was coming down, Erika would moan again and come, squeezing around her hard thing. Emily could just not help how good it felt... After a minute, instead of going soft, she felt another rush of fluids gush into Erika.
"Ah! it's... Oh!" Emily let out lewdly as her dick was spasming uncontrollably, until it dislodged itself from Erika while it kept pouring ropes after ropes of goo on herself, wetting her own belly and chest. She tried to wrap her hands around the thing but it was too slippery and her hips were still bucking in the air.
Erika fell on her side near Emily on the bed, still panting. She passed her hands over her rounder belly; she couldn't tell how much was the canine seed and how much was... whatever was growing inside. She also finally noticed the teats on her belly, and her pussy felt on fire.
Emily looked down to the thing between her legs; it had not grown more. Erika was right. But it was still there...
"Erika? Can you make it go away more...?" she asked timidly.
Erika thought for a second.
"Well, you need to drink the goo, and it will only work temporarily", she answered. Looking around, there were small puddles of fluids but they were all soaking on the bed, or smeared over Emily's body. She looked down at herself; Emily also stared at the juices that were overflowing between her legs.
"I guess you could..." Erika began, but before she could even finish Emily was already sucking on her pussy.
She left herself fall back on the bed as Emily was sucking her clit and slipping her tongue as far as she could inside Erika.
"Slow down Emily, it's sensitiv..." Erika tried to articulate, before howling lewdly as an unexpected wave of pleasure hit her again. As she arched her back against the bed, she felt another wave of orgasms hit her for the third time.
Emily held on to Erika's pussy as best she could, sucking all that she could until she started feeling the floppy thing between her thighs shrink and pull back into her body. Putting a hand between her leg, she felt the ballsack sink into her and open into a vulva, just like she had before the salve.
She let go of Erika's throbbing sex. "It worked!" she squealed.
The two girls giggled and hugged each other, realizing their current sticky state.