Does anyone have any helpful information on the generic version of Yasmin called "Ocella"?

I just recently had my copper IUD removed, which DOES NOT have any hormones in it, the copper works as a spermicide and I believe it causes the lining to thin... anyway, so I have been reading info on Ocella on forums, etc. and alot of people say that they don't like it. From what I can figure, it seems that it is probably their body trying to adjust. So what I want to know is, has anyone experienced any bad side effects with Ocella, who hasn't switched over from another form of HORMONE contraceptive? I have the pills now, but haven't started taking them yet and am hoping for some helpful input before I start so if I need to, I can have the script changed before begining. Thanks!