Suggest Remedy To Avoid Pregnancy

Last month I went off birth control due to too many missed days of taking my daily pills. I'm already on my new pack since I got off my last period last month. I have ten days to go before my sugar pills but I had unprotected sex two nights ago and he did cum inside of me, this morning i had white discharge and I have some cramping in my stomach too, I'm a little worried about the possibilities of pregnancy since this was our first time not using the pull out method and starting my birth control not too long before