Previously, I never used birth control pills until I started to use for 6 months til now. It's good because I found that my skin has no pimples and weight increases. But I just realized that before my period came I was so depressed and had mood swings so much. It was effective people who lived around me. I couldn't control myself and sometimes I cried a lot very badly. One more thing I don't have sex drive even 29 years old, but I feel I don't wanna have sex as well. Should I change birth control pills? If yes. Which brand suits me? Can I suddenly change Or have to wait until currently done? Is it side effect exactly from this medicine?