birth control

Anna
So I've been on birth control specifically microgestin which is a low form, since September. Well I'm currently on my second week of my new pack,but I missed my last active pill of last months pack and I never took it and I've been having period cramps the past couple of days, and tonight TMI my cervical mucus is thick,creamy,and white but no smell. Is my period coming or could I possibly be pregnant!?!?