Pill rant

Okay so i'm nearing the end of the second pack of my pills and this month has been HELL. Last month was perfectly fine and the only negative symptom I had was crazy mood swings during my pms time. This month, i've had constant naseua that I think is pretty comparable to morning sickness. I can't stand the smell of anything and i'll be hungry then when i get my food want to vomit just looking at it and smelling it. I've been having headaches and hot flashes, and some crazy ass mood swings. I don't understand why the firat month was okay but now that it's been in my system for two months Ifeel  so badly. Is this normal? Should i see about switching pills?