CURE for a UTI

I feel like I have a UTI because last week I had sex with protection, but lately my pee has been smelling really bad and it looks a little bit cloudy. I’m 18 but I’m still in high school, don’t have a car and live with my parents. I feel like I should tell my mom so that we can get proper medication, but I don’t want me to know that I invited my boyfriend to my house without permission. What do I do?