Side Effects Before A Period I Was On Birth Control For A Month With My Husband And Stopped Before My Period Because Of Side Effects.?

I was on birth control for a month with my husband and stopped before my period because of side effects.? - side effects before a period

I have my period next week and started again on Sunday, the first day of my period was. Then he stopped, because time and again for negative side effects. My time is now the end of two weeks. I had sex on the pill. Is it possible to be prega? Or is it the pill my cycle chaotic. Moreover, it is for me rarely have time irreglar.