So my last period was feb 8 and I counted my last cycle which was 40 days. But my periods have been all over the place. I had unprotected sex feb 18, around feb 23 and again march 3rd. I shouldve had my period around march 8 but if my cycle is like last month I wouldve gotten my period around march 18 or 19. But its march 23rd now and I still havent gotten my period. Could I be pregnant? Or is this just another crazy cycle?