uti lasting a week help

Ash
Okay so I had protected sex like 5 times from march 28-30th. I'm well aware you should pee after sex but I didn't and I know that was stupid but it was my first time having sex I was too in the moment. Anyways I got my uti I wanna say on the 2nd or 3rd of April and it hasn't gone away. Most days it's not there so I think oh it's gone but then like right now it wakes me up and says I'm backkkk. It doesn't hurt anymore really, the first day or two hurt to pee a lot. I don't know how to describe it but it's just annoying and uncomfortable how it is right now. Almost like the inside is itchy but like it's not? I don't know. I've had this for about a week now and I've been drinking plenty of water and I don't know what to do. I can't tell my mom because she can't know I'm sexually active so that's just not an option. Do I need to go to the doctor? Can I go to a walk in by myself by chance? Help is much appreciated!