need help!! I had unprotected sex a month ago and had morning pill on the 4th day after sex. I started to bleed 4 days later after taking the pill which started with clotting and then became heavier with lots of pain and clots. I have taken several pregnancy test, all negative. Now waiting for the period, i have sore breats, headache and bloating. My periods should start in 2-3 days. Can i still be pregnant? Do i need to take another pregnancy test, blood or urine? I am really scared.