Last Monday I started my period. It was a normal 4-5 day period. I took a pregnancy test right before I started and it was negative. Today, I started having some slight cramping so I took an ovulation test and pregnancy test just to make sure... well, pregnancy test was clear as day, double lines. So I took two more... they were positive. So now I’m trying to figure out how this is possible with having a period and trying to figure out my due date! Any insight??