Vagina pain

I’ve never had much luck with my vagina I’ve gotten lots of utis i keep it clean I wear cotton underwear when I lost my virginity it started to happen more when I went to the doctor every time they would say it was a yeast infection or a uti. I have protected sex sometimes unprotected but I don’t know what I’m doing wrong? The pain happens at least once a week and can last for a few days. I pee a lot but only a little comes out.