Hi, Karey -
I've never been on Yasmin, however, I can tell you this: All birth control pills (at least the combination ones) deplete many of the B vitamins, so that's probably why you're feeling so anxious. Try taking a B complex vitamin every day, this should help you a lot. I'm not sure about the cramps and the headaches, though. Those just may go away the longer you're on it. Hope things get better soon. Take care.