I had my period on 11th April, it was for 5 days. After that on 21st April had unprotected sex, within 5-6 hrs I took unwanted 72 pill. Now on 5th may I got light cramp in my stomach and saw that I was bleeding. It was dark brown reddish discharge with little blood, the bleeding was not much but it was bright red in colour with dark brown gooey lumpy discharge. At first I assumed it's my period but after one day there was no increase in the blood flow. By the end of the second day the bleeding has completely stopped. Now I am worried if it was implantation bleeding or period or an effect due to contraceptive pill. My boobs are a bit sensitive but other than that I have no other symptoms. Please tell me what could this be?