Over the next few days Karyn's manhood began to shrink. By the following Saturday her groin looked pretty much the same as it had when Jon had first made the wish. He again gave Karyn oral, but she was only a couple inches long now, and when she came only a small dribble spurted from her half penis/half clit.
Over the course of the following week her vaginal opening returned, her labia formed and Karyn was fully female once again. Karyn actually missed peeing in the urinals the women's restrooms now had. After nearly three weeks of being able to pee standing up having to go in the stall,sit down to pee, and then wipe afterwards seemed almost like a hassle. As Karyn washed her hands after peeing she looked on with envy as other girls in their male cycles just walked up to the urinal and whipped out their dicks to piss.
When Karyn was at the peak of her female phase the following weekend she and Jon tried having traditional intercourse. Jon, not being very experienced at that put in a performance that was underwhelming for Karyn. A quick wish by Karyn Saturday night had him pleasing her like a pro the next time though!
Karyn noticed that the actual time where she could have sex as a full woman was only about three or four days a month. It was roughly the same window as the "ovulation" period women had during the old menstrual cycles of the previous reality. Karyn knew from both Jon's wish and online reading that she could be impregnated during those few days in her cycle and if she did her cycle would stop until after she gave birth. The thought of having a vagina full time was actually a bit odd to Karyn now.
Meanwhile, she was fully functional as a man for about five days each month, roughly the same time period as well...a period. During that time she and other women in their "male phase" could impregnate other females. Interestingly, any babies sired by women were always girls, as women did not have a Y chromosome to pass along via their sperm.
Karyn was really enjoying the new cycle, she didn't miss menstruating at all. Shoving a tampon up her bleeding hooha and getting cramping sucked compared to simply getting a cock and shooting cum all over Jon's face!