Should I go to the doctor for UTI

I’m pretty sure I have UTI and it’s freaking me out. I’m sure I got it when I had sex, and idk what I’m suppose to do from here. The symptoms are well visible and have almost all of them. My Mom will actually kill me if she finds out I had sex. And I looked a bunch of at home remedies, but idk how bad it is. I am still a minor, and I would have to go to the doctors with My Mother. Can the doctor even tell I got it from sex? Any idea on what I should do?