What's Wrong With Me?

I started the combo pill December 30th 2018 and now I am like super emotional. I will get mad at my fiancé for no reason, even over little things. Like my lighter died and I needed him to come outside and let me use his friend's lighter to light my cigarette (I smoke cigarettes.) And he told me he had already left the mall where we were. And it was a little thing I got a new lighter at the dollar store, but like I am getting mad, sad, etc over little things. Can someone tell me why?