Why do I keep having vaginal issues and how to avoid them?

Ever since I lost my virginity two years ago, I keep getting issues. I’m not sexually active often since I’m not in a relationship. Besides that, I get yeast infections soo easily. I also just took antibiotics to cure

my bacterial vaginosis a week ago, and now I have burning and slight blood when I pee so I think I need to go back to the doctor to see if it’s a UTI. Is there any reason I keep having issues? I don’t know one other women in my life that has constant issues. Is there anyway I can avoid this? Could my diet effect this?