Well I'm not a doctor, so I can't really give you medical advice. What I can say is that one reason you have mood swings is due to hormonal changes in your body. I recommend you speak with your doctor about how to help lessen your mood swings. I have heard that some women get the Depo-Provera shot instead of pills as birth control to help with mood swings. However I highly recommend you speak with your doctor about this to see what is right for you. If you like girls and guys then you are probably more than likely bisexual. This just means you like males and females. There is nothing wrong with that either. Your sexual orientation is not a disease that needs to be treated contrary to what some religious people might say. This could be simply a stage in your life that might pass, or you may be bisexual the rest of your life. Once again there is nothing wrong with this. Don't be ashamed of who you are.