UTI Advise

Now before you get all judgmental... I know how stupid I am for not going to the doctor. I have an undiagnosed uti and I’ve been taking ampicillin for it because I looked it up and it said that would work, but I didn’t stop having sex after I had the symptoms and now I’m bleeding. I can’t tell if it’s period blood or if it’s because of my uti. I know I should’ve probably gone to the doctor but I was just there for a different reason and really don’t feel like visiting again so soon. Any advice on how to 1. Get rid of my uti and 2. Figure out if I’m actually on my period, would be greatly appreciated.