Can I still be pregnant? In December, I had (Unwilling) unprotective sex . I m on birth control I missed a pills before though. I also took the morning after pill about 3 days later. I got my period the last thursday of my pack. I have a 28 day cycle. I ve gotten it on the last Thursday of pack so far. Lately , I ve been more tired, moody, my left boob having sharp pains, and stiffening in my lower abdomen . My periods have been more heavy && painful periods.