Supposedly Yaz helps women with bad pms (or at least it's marketed that way). However, many people on this board will say that it actually made theirs worse. I've never taken it, so I can't comment on it. If the problem has only been since the pill change, though, you'll probably just have to switch pills. Before switching pills, though, you might try taking a B complex vitamin every day and see if that helps. Birth control pills deplete many of the B vitamins and that could be what's causing your problem. It might not be the case, but it's worth a shot.