3 days (exactly) after i have had sex, my the left side of my virgina really burns, and the inside on the left hand side feels swollen. I also get a non smelling yellow discharge I have been to the clinic, but nothing never shows up. this has been happening to me for about 3 years now. I tried everything, and nothing works the only thing that did work for me was the antibiotic Zithromax this use to work and syptoms was clear within 4 days but that no longer works and i am desperate to find out what is wrong with me. please can you help any suggestions what can be wrong with me and how i can treat it.