Urgent PLEASE HELP Birth Control Question

Urgent (for personal reasons): I just got birth control for the first time, the famous pill itself. 
When I get my period I get really bitchy and mood swing-y a day or two before. Normally, at my boyfriend. I don't want to. I'm so happy with him besides THOSE specific days where I become a music teacher trying to quit meth. 
Does birth control cause mood swings like that? Might I get like that... often? Like... a lot?
I don't want to be like that. Its stressful and hurts the people around me. I hate that.