Whats going on with my mom??? How can I calm her down?

First of all: WHOA!!!!! Second, your mom is on the WRONG kind of pills if this is her behavior on a regular basis. Encourage her to see a different doctor if you can. She is definitely being abusive towards you. Is your father around? See if he can help you get your mother the help she needs. If this gets worse, you may consider calling a doctor yourself and asking for their professional, medical advice. Either way, GET HELP!