What is going on with me?

Lately I've been way more temperamental then normal I've been crying a lot, sad having break downs feeling out of place. One moment I want to be around a lot of people and the next I want to be alone and I hate everyone, that often happens when something happens to me. I've been complaining to my boyfriend a lot for no reason or getting really mad at him and having like mood swings and wanting to break up with him to be alone even though I know it's not what I want... Am I just going crazy or is there a name for this or something...