Susan and Alan - next month

The next few weeks were uneventful. Soon, it was time for the change, and Susan was getting excited.
The evening of the last actual birth control pill, Susan took out the thong she wanted Alan to use. They both striped down.
"Hey Alan, ready?"
"As I'm going to be." Susan passed the thong to Alan who touched it to the medallion. Susan stared at his hair slowly coming in and changing to her color.
"Here you go Susan, a pair of my boxers, " said Alan passing them and the medallion to his wife.
"I really appreciate this hon," said Susan touching the medallion and boxers, feeling the familiar tingle.
"I know you do. Remember, laundry, dishes and driving for the next 2-3 days, " said Alan as he started getting a little shorter as Susan got a little taller.
"I remember the deal, hon," replied Susan, her voice deepening as she said each word.
Susan stared at Alan's chest as the nipples darkened and enlarged, while the chest itself became an A cup, then B cup, C cup and finally D cup. Her clit was tingling watching it, and the tingling slowly became an erection. As Susan's dick came in, Alan's slowly receded into his body. His testicles disappeared and his scrotum opened to become his unknowingly fertile womb.
"Susan, you're gorgeous," said Susan.
"I know. Look at me."
"I am, but I'd like to do more than look at you."
Susan didn't waste any time, an soon they were going at it hot and heavy. Susan made sure to finish in her husband

and again
)
and again

The three days were up, and it was time to change back. Alan touched the medallion to his shirt, and changed back. Susan felt disappointment. She tried so hard to knock up Alan. Maybe next month.
The next few weeks, Alan and Susan's sex life was getting much better and more frequent. When Scott went to bed, they went at it in the bedroom, kitchen, stairs and living room. Everything was fair game.
Soon, it was time to switch again. Susan gave Alan the same thong as last time. Again, the two went straight at it. When they could sneak away, Susan fucked Alan. Initially Alan protested, but Susan reminded her husband that turn about was fair play, and if he could fuck her in the kitchen, she could fuck him.

The three days passed again, and Alan tried the medallion on the shirt