After a long day

Alan was distracted all day at work. His butt felt too big, his chest was sore and his lower abdomen hurt. Not to mention the constant strange feeling between his legs. He muddled through the very slow day and drove home, hoping his co-workers didn't notice anything. He went straight home, and changed into sweatpants. He had an urge to have some ice cream, and indulged.
Susan was distracted all day at work, but for a different reason. Her husband thought he couldn't be changed for 4 days, but she knew otherwise. She could do anything to him at any time, or herself tonight. Did she want a new pet? Maybe a twin of herself? Maybe she could mix and match? Maybe they could swap bodies? Before she felt like she did anything, it was time to go and pick up Scott. She pulled up to the school.
"Hey pumpkin, what did you do today?"
"Learn some addition, read from a chapter book, played kickball."
"Which book?"
"Phantom Tollbooth."
"That's a fun book. You ready for karate?"
"Yes!" said Scott as he practiced his punches while seated in the back seat on his booster.
At Karate, Susan continued to daydream. They she realized what she wanted to do.
Scott and Susan went home and met up with Alan, who made dinner after his ice cream snack. Alan helped Scott with a little homework and got him ready for bed.
"Alan, I want to try something with the medallion"
"What? We can't use it for a couple more days." said Alan as he messaged his cramping stomach.
"Maybe there is a loophole. Your currently part me, and that's a part that cannot change. What if you become me? Maybe since I am me, but not having a period, it's close enough?"
"So, I'd be you for 12 hours?"
"Exactamundo"
"Anything is better than this, sign me up." Alan started to strip.
"Here," said Susan throwing her top at her husband. Then threw the medallion in the bag. A naked Alan took it out and touched the two items.
The first minute, nothing seemed to change, then slowly Alan's hair started to fill in with his dark hair, changing gradually to Susan's brunette. It became curly after the first couple itches came in. Then the shape of Alan's eyes changed to match Susan's, with his eyes lightening to blue. His lips plumped and his Adam's apple slowly receded.
"Honey, it's working! Hey, I sound like you." said Alan brushing the red hair off his face absentmindedly.
His shouldered narrowed and he felt something pushing under his nipples, which had started to enlarge. He could feel his legs starting to change, but couldn't see all it past his wife's 38D breasts. After about 30 minutes, he was a copy of his wife.