Okay so about a year ago, i noticed searing pain in my lower back, butt and pelvic area (like pooping cramps) whenever I inserted anything into my vagina, and I never had this problem before when i was younger, using tampons. Suddenly it just started, and I got it looked at by the doctor said it was fine. Then I had sex for the first time and it hurt really bad, and a few days afterwards, I noticed my vagina smelled bad, and I was having weird discharge. I haven't had itching or, redness, or pain, but I'm still worried. I know my boyfriend has had unprotected sex before he met me but it was only with people he knew personally and hes been tested and he's clean. Should I be worried? And if I do have an infection, how would he have given it to me without having an STD himself?