I have had regular periods but went off birth control 3 months ago. I still have fairly regular periods. This month I was supposed to start in the 2nd or 5th but haven t. I had brown mucusy discharge and some lie bleeding but only when I wiped. For the past week I have experienced cramping, bloating , gas, headaches , lower body aches (abdomen, hips & upper thighs). Is it possible to be pregnant?