I just found out Oct 27 2012 I was infected with trich (which was weird because i hadn't had sex in like some months and I'm lesbian). anyway I was having some unusual symptoms I had mistaken for a yeast infection and went to get checked out. my doctor gave me 4 pills of Metronidazole and instructed me to take it in one day and i did. i was clear of symptoms for two weeks then it started back. (itching, discharge, swelling) so i went back to the doctor he said he still saw it. so he gave me an extended dosage for 7 days that's 14 pills two for each day and he also gave me an one time pill for yeast infections and instructed me to take the pill after i finish my 7day dosage to prevent a possible yeast infection afterwards. i did that and i say about two more weeks passed without any problems or symptoms. then i go to get a pap smear performed and they said I was still infected with trich AND they now were detecting bv as well so i was given another 7day dosage. now its a week and a half later and i have no more medication. I took everything as instucted, i have not been sexually active since Nov 2012 and its Jan 2013. And im still discharging and having symptoms. I have never been infected with anything before this not even a yeast infection and i have been tested for all other stds/stis and im clean. But why wont this trich go away? if i go back this will be the fourth time in three months. i feel ashamed and embarrassed and i dont know what to do. i stopped using perfumed soaps i even try to take my daily vitamins, milk, and i tried to wiped after i noticed discharge in my pants. I don't understand can i be immune to the medicine? or is there another medication i can try? each time i went to the doctor he kept giving me the same thing