Help! Possible infection?!

I’m going to make a doctor appt tomorrow morning but In the mean time , what were your symptoms of a bladder infection/uti? My boyfriend and I had amazing sex and the next day my uterus felt so heavy like I have a lot of pressure and I’m urinating so much more often, at first I thought it was the sex but it’s been a week now and I still feel it. I’m also a week late with my period and think this could be causing it 🤦🏻‍♀️ it doesn’t burn when I pee or anything it’s just heavy feeling. Anyways what were your symptoms?? Also, can this be caused by sex? We’re both 100% clean.