Pain around belly button, Blood in stool

Hi doctor, I had unprotected sex with my gf on 3rd may, day before her periods was due.And I didn't ejaculate inside but wasn't sure about precum. So to be on the safe side, she took ipill within 4 hours and on the very same day she started bleeding in the night for around 3 hours and the bleeding stopped completely. We thought it was the side effect of ipill.And again on 15th May, she started bleeding which continued for 3 days and this was very very heavy bleeding. Again we thought it to be as the side effect of ipill. But yesterday, she noticed that there was blood in her stools(though it was not heavier) and she also had sudden pain in upper abdomen for a while. Now today morning she noticed that there was lot of blood in her stools and also the same discomfort was there. To be accurate the pain is around the belly button. Please help me...she is very tensed