What could these be?

Okay so I was having THE BEST SEX in my life throughout Sunday. New

partner. Really intense, did it three or four times. The guy said he hadn’t been with a better partner up until now. 😅 Nothing wrong.

Then on Tuesday, I walked home from work. This is like a 3-4 km route I take every evening. The difference is this time I forgot my yoga pants so I walked in my shorts. Usually I chafe, and it occurs a bit lower on my thigh. When I got home, those were already starting to appear. They are somewhat itchy and a bit painful when pressed.

I’ve never had any such rash so I’m not sure if it will go away or if I should seek some help.

Also, I should point out that I got really mild UTI (from all the sex obvi.. because who can pee when one can’t walk 😂) which is already clearing up.