I found out I was positive for chlamydia, i had no symptoms and was given 2 500mg of Zithromax. The day after I took the medicine I had drunk some alcohol. The next morning when I woke up I had swelling around the opening of my vagina, itching, and a watery discharge.It has been 15 days since I took the medicine and am stil having these symptoms. Did alcohol make the Zithromax ineffective? Or do I have another problem?