My last period was Nov 1st, since then my boyfriend has came in me 16 times. It is Dec 1st today. This past week my breasts have been very tender, I've been more tired than usual, constipation here and there, nauseous.. etc. But, I just got my "period" today. It's not my normal period though. It's not as heavy and my cramps are not even half as bad. Can I still be pregnant?