What its like to have a micro penis reaction XD

If you're worried, maybe some facts (research) can calm you down https://sci-hub.hkvisa.net/10.1111/bju.13010
But it would be better if you'd focus on things that do matter.
Your anatomy is not one of those, especially when you try to measure something that keeps changing size and is partially soft, at least on it's surface, even when we call it stiff.

Psa; if your penis is 5 inches...and a female says it's little, she's a whore. you weren't her 1st...or even 10th partner...it's a pump and dump chick