So my period is 12 days late I got off birth control 8 months ago and I've been having a regular period every month since then.. I've been having back pain since Tuesday I went to the ER they came up with the conclusion that I could possibly be pregnant I told them I took a pregnancy test the day before which was a bfn so they did another test which came back negative the doctor told me to take a test every 4-5 days.. I haven't had any cramping or even a drop of blood I've felt sick on and off but no sore boobs or anything my bf pulls out but immediately goes right back in I don't know what to think or do.. Could I be pregnant or did I just skip a month.