Post sex....

I'm really embarrassed asking, but I've seen what other people have posted and feel like there's no judgement here! ☺️
I've been having a lot of sex with the guy I'm dating, and then two days later, I'm having itching & urgency to pee. Not really painful to pee, but sensitive to wipe. I'm 99% sure it's a UTI but I'm working so much I haven't had time to go to the Dr (not to mention I HATE those visits I feel so awkward). I did an at home test strip that's tests the pH and it says it's off balance and traces or whatever that present as a UTI. 
Would not peeing after all the sex be a big problem?