Embarrassing Question...

So I understand that unprotected sex isn't safe.. but I do have the implant so I feel alot more comfortable with the whole thing. (Also it started burning the inside of my vagina once we started.) Anyways, we were doing our own thing having vaginal sex but he was about to finish so he wanted to do anal and finish inside there, but we kept going back and forth from anal and vaginal; and now I'm worried that I might have some bruising or irritation down there. Its starting to burn while I pee and its starting to make me wonder if I have a UTI.. I'm too scared to ask my mother since she doesn't even know I'm having sex yet, and knowing her she's just going to chew me out for everything. So what do I do?

EDIT!! I ended up going to a walk in clinic and got the antibiotics 👍🏻