Kinda awkward...

So I had sex for the first time a little over a month ago, I'm nineteen. I got a UTI pretty soon after and found out you're supposed to pee right after sex to avoid them, and that went away. Then a week ago, maybe two, I noticed that my labia was itchy (not inside my vagina, only the outside lips) so I looked at it kinda closely and, well, the skin is peeling a little. It's almost scaly. Is this something I should be concerned about? He's been checked for STDs and he's clean... Anyone know what's going on?