My sister was also prescribed BC for her PCOS, and I think it may have helped her for a while, but she had to stop taking it because she has another medical condition. Since she had four refills left when the doctor ordered her to stop taking it, I figured I'd take advantage of four months of free BC without having to get my own prescription. I'd taken birth control (Yaz and Lo Loestrin) in the past with only minor side effects, so I was kind of surprised when I experienced extreme nausea and breast tenderness for the entire duration of those four months. I don't even remember what it was called because it had some long generic name, but it was awful.
Yeah mine worked for the first 6 months just fine, things were improving but then I started getting what I thought was severe heartburn. This became an almost daily thing until it started hurting my jaw and teeth. I looked up the side effects of my BC (Microgestin FE 1/20) and realized that everything that's been going wrong with me is probably due to that. The problem I've had is it took my boss from October until the 1st of Feb to submit my insurance paperwork. I only just got insurance so now I can see the Dr without it costing me $200 for some chick to hear my story and do the yearly look at my snu.
I should have just come off it sooner but in all honesty it didn't click until I thought to look up the side effects. I've never had a BC make me feel so bad. I tried Ortho Tri Cyclen Lo before this one and it made me feel shit, but I'd rather deal with the dizziness, headaches, cramping, and 2 week periods over all this other shit.
I also looked up what it's doing to my skin, the only cure for the embarrassing skin patches is Metformin. I can't wear my hair up anymore, can't wear anything with my cleavage showing, and it's starting to develop in my inner-elbows. I'm just a little bit more than miserable lately (I'm sure people here have noticed >_>) I cry at everything, I also want to punch and scream when even the smallest thing goes wrong. I'm so depressed I've thought about stupid shit.
I just need to get out of this rut 
/endrant