"N... no!" Erika whimpered, her whole body shaking.
She didn't want to get pregnant! What if the milk's hormones she had ingested would make the whole situation worse? What if it was stronger than the morning after pill? This was not a risk she was willing to take. Her body may look mature, but her mind was not even 12, and she had ran out of solutions.
Suddenly, she got a new idea. What if she used the salve again? It may be risky, but surely she could only defeat female pregnancy with the male effect of the salve. This way she could balance things out before her womb would fill with growing puppies. Maybe turning into a male dog could prevent this from happening.
She crawled to her room and rummaged through her bedstand's drawers and under the bed until she could find the salve. Sitting on her knees, she aimed it at her belly and groin, and she hit the nozzle with a trembling hand. She then sprayed the inside her mouth, swallowing some of the salve in case ingesting it would work better.
For a second, nothing happened. Then the pressure in her belly began to subside slowly; a gush of sticky fluids flushed out through vagina, making a small puddle on the carpet. Erika let go of the salve with a sigh of relief. No risk of pregnancy for her!
Suddenly, her genitals started feeling burning hot. Erika looked down, and saw the familiar stirring of her happy button as her clitoris began to grow from the salve's effects, ignoring the influence of the goo she had ingested earlier. Her body was reverting back...
She watched her mutant clit fatten to one inch long, then two, then three, shifting to take the form of a small penis again. She felt her vagina seal as plump orbs began swelling where her lips had been. So far so good...
An alien spasm animated her member; it fattened again and stirred vigorously, becoming heavy between Erika's legs. She cupped it with both hands as though she could slow its transformation, but it kept growing and pushed past her hand while the furry balls underneath filled the remaining space between her feminine thighs.
"Stop..." Erika grunted in a husky voice, almost startling herself.
The texture of her penis had become more... veiny, although the skin was still very smooth and delicate. The uncut head met the carpet with a thud, its hefty length still soft.
Erika stood up shakily, an impressive 6 inches cock slapping lazily between her legs. Although it looked superficially human, she felt the base of the member thicken slightly - a nascent knot, just waiting for an excuse to swell to its full size.
She was developping canine traits on the spot! As she was looking down on her body, she noticed her canine nipples were pushing out of her body again, hardening against the cooler air.
Erika panted heavily and licked her lips. That's when she noticed her tongue felt a little different. Longer. Passing it over her teeth to get a better feel, her canines seemed extremely pointy. Rushing back to the bathroom, her male package jutting from her groin, she examined herself in the mirror.
Her ears looked a tad pointer, but most of all her canine teeth had become much longer than average - for a human. She almost looked like a vampire! Sticking her tongue out, it looked half-way between that of a human and a dog. And the creamy fur that covered her balls had crept up her groin and developped into a happy trail, drawing a cute line up to her navel.
Her face had kept its youthful innocence for the most part - it was mainly her feminine hips and perky breasts that looked much more mature, and she had gained a couple inches since last week.
"Well it could have been worse..." she said to herself out loud, giggling. She jumped in surprise as she almost didn't recognize her voice.
Sure, it was still her, but... it sounded more androgynous. In fact, her whole body was. She looked more like a femboy with breasts than the young girl she used to be. It was only subtle details - a slightly more athletic build, her shoulders were a bit less petite, her feet a tad bigger - but she was barely female anymore, and her huge penis was just the most obvious of the clues.
Erika was beginning to understand... The more she would impregnate females, the more her male traits would assert themselves in her body. And so far she had bred with her friends twice already! If she didn't control her mating urges better, she could end up a full grown male like Cole or worse...
"Well at least I know Melissa won't want to see me anymore, so that's one less risk..." she thought to herself bitterly. She wondered when her friend was due... Seeing how fast her pregnancy was progressing, it would surely be over before tomorrow.
"Oh shit, Emily..." Erika remembered. She was still at school, but sooner than later the effect of Erika's cum in Emily's womb would manifest.