What are the chances of me being pregnant? I had unprotected sex (pulled out at the right time) on March 17 and got my period on March 23 (lasted 6 days, cramps, bloating, medium/heavy flow). My period was supposed to start on the 16th of April. I am three days late this month. I took one pregnancy test yesterday and it was negative. Should I just wait? How late is too late?