Green vaginal discharge, gyno says nothing's wrong?

[Corna]

I've had a green, mucus like vaginal discharge, and an "unfresh" feeling for about 5 months now. I've seen several gynocologists, the first one told me it was a yeast infection, so I took meds for that and it didn't work. Then another gyno told me it was a bacterial infection and gave me antibiotics (Flagyl) which cured me for about a week then it came back. The most recent time I went to the gyno, she looked at my lab results (it was a swab test for various things) and examined me and said everything looked fine... I kept telling her about the green discharge but she told me she "didn't see any" even though I'm 100% that I have it. I don't really know what to do now... my only symptoms are this green discharge and slight discomfort. I'm not sexually active nor have I ever been so it can't be an STD. It started in early June around the time I stopped taking birth control, could there be a correlation? I do have PCOS and I'm 18 if that means anything.
I'm getting really worried because it's literally been 5 months and the problem hasn't yet been solved I'm worried it'll get worse.

[specialmom]

Hm.  Well, you've been fully examined and swabbed.  If there was something wrong with the discharge, they'd have noted it then. While I can't say a green colored discharge is normal, it doesn't sound like there is anything medically wrong with yours. If it doesn't itch or smell, it isn't a health concern.  I'd see if it clears up and revisit it at your next doctors appointment if it doesn't.