Metformin and some type of birth control pill are normally the treatments of pcos. I've had pcos since (and maybe longer) 2007 and have been on metformin 500mg 2x since Jan of this year, plus I'm on Yasmin bc pills. Yasmin, like luisa24 said is the best form of bc pills for pcos. It also helps great if you suffer from mild acne breakouts.
To answer your question about the side affects after you stopped treatment, well that i cannot answer. I'm still be treated and pcos is something that just doesn't go away. You will always have it, but the symptoms should get better. My doctor told me that I would probably be on metformin for a while and chances are when I try to get pregnant I will still be on this until a few months into the pregnancy because with women who have pcos are greater risks for miscarriages.
Hi, it depends on the treatment I guess, but I don't think you should expect any weight gain. Metformin will help with weight loss - I don't have any weight to shed, but Met really helps with appetite and maintainance. I also find Yasmin (BCP) harmless in this respect: I gain weight very easily usually and struggle to maintain it off, but Yasmin never caused any problems in this respect, I'd say on the contrary. Spironolactone which is used to treat hirsutism or hair loss is a diuretic, and therefore it will actually help you not to retain water (I have this problem). These are the most common approaches and none of these will lead to weight gain. At the beginnig of the treatment I was put on Diane 35 (BCP) and Androcur (these are not available in the USA) and while they worked wonders for my hair I was starting to gain some weight - so I went off them. Maybe other girls here will tell you more about their treatments. Good luck