Please tell me, could calm down when i get angry or to stop me from getting really bad mood swings?

See a psychologist: It would be hard to answer this without knowing a great deal more about about what kind of mood swings you are having and what is causing them. Quite a lot of different things could be going on that are causing anger and mood swings, it sounds like a consultation with a mental health professional (a psychiatrist or psychologist) is in order to get some answers and meaningful help.