My penis keeps decreasing in size

I am 21, I slept with a shemale I had a 2.4 inch cock but she didn't fuck me,.but I sucked her thick cock, after watching my cock size she was more interested in trying out something new she frotted with my little cock. She put her thick cock on my little cock pressed it in. And boom my cock was gone. It was inside my stomach. She humped my little cock for about 7-8 minutes and came and i came like 3 times while she was humping me. No shen she pulled out her cock from my stomach. My penis did come out dripped in her cream and it was very small at 1st like a pure clit. But after a few minutes it was alright now after a few days i noticed that my size has decreased and when i inspected it it became a pure clit it was 2.4 inches. Now it's 1.7 inches & doesn't go up from that is that permanent? Because it's been a week and i haven't seed it grow back. Now I can't fuck anyone with this size it doesn't come in my fingers.