One very apparent change...

"..."

You weren't sure how you managed to get home that afternoon, with Samantha being up your butt (figuratively, of course, but you wouldn't be surprised now) about the program and the testing mechanism. Even the CEO had been more than a bit hands on with you and your projects, though you knew as well that he was in need of something else more hands on. You left each of them a specimen cup to ensure that they would be kept satiated until they needed another load before you excused yourself and left the building.

Now, as you came home, you were able to get to your bathroom and then stripped off your clothes, taking a good look at the changes going on in your crotch, especially with the way that your cock now was pulsating. There was no way around it. There were jokes about horses and donkeys. You were sure now that you would be another unit of measurement.

Kayla, you started calling your dad that now in an attempt to working through some of the issues you were dealing with, had noticed you coming into the apartment and rushed immediately to the bathroom but as time passed and you just stayed in there, came over and knocked. "Hey, are you okay?"

"..."

You felt it, it was very active, and the more it throbbed, the more you saw the changes in your body's **** changes. Your ballsack had grown, if that was possible, in size and when you grasped them, the firmness also shocked you as well. Perhaps this was a symptom, the means for your body already was to pump out a load of sperm that made any man feel inadequate was now perhaps tripled or even more. This would have to be tested, documented, catalogued, but more than that, you were sure of one thing.

You needed to fuck something.

Kayla was more than a bit surprised at the look in your face and her eyes immediately dropped down to the monster jutting out from your body. Before she could focus or even begin to comprehend what you were doing, you grabbed her and pulled her robe completely open, exposing her soft skin and C-cup breasts. Her body was now in her second week of ingesting your cum so there were small changes that you had noticed before but now, right now, you didn't care if she was suddenly Dua Lipa or Beyonce proportional.

"I need to fuck you..." you growled and kissed her deeply, pressing yourself against her as well as pulling her to you. She gasped and then moaned as she dropped any pretense, her body overwhelmed by the pheromones your body was secreting like mad and though biologically male (that was debatable at this point), the hormones pumping through her veins were pure female. Her body grew weak as well as hot and she felt the need in her own growing rapidly. Even her clitty grew hard for her. "Oh, looks like you want that too, huh?"