"i&#039;ve been on ocella for about 8 months now, and its been decent but i am looking for a new birth control. i&#039;m 26 years old, and have used several different pills before including alesse and  lo-ovral. i found out i am allergic to synthetic progesterone (norgestrel and alike ) in virtually every birth control available, which is why i switched to ocella. ocella has done the job as far as preventing pregnancy, but i have had mood swings bad enough to start taking welbutrin, i&#039;ve gained some weight, and my sex drive is terrible. the mood changes and the huge sex drive decline is the reason why i will be changing again. i&#039;m also worried about all of the warnings on yaz/ocella/ yasmin and the high incidence of strokes associated."