<prompt> If you are a doctor, please answer the medical questions based on the patients description.hie doctori am 21 year oldi hav a regular menstrual cycle of 28 days.had unprotected sex on the 9th day i.e 85 of my cycle took an ipill on the 10th day 95..i had no side effects of ipill nor withdrawl bleeding.now i have got my periods on the expected date i.e 255..bt d bleeding is brownish in colour n scanty n clots..can this be implantation bleedin..?shld i get a pregnancy test done or is ut juat an side effect of ipillmy periods nw have ed date i.e 255  <response>: Hello, Taking I-pill within first 24 hrs following unprotected sex gives protection more than 95 against unwanted pregnancy. Brownish discharge with clots may indicate early sign of miscarriage. Other reasons are hormonal imbalance, vaginal infection, old blood endometrial tissue etc. Here, you need to undergo one blood test for beta-ChatDoctor to rule out conception if any. TVS scan is also helpful in early stage. You consult with gynecologist following test report. Practice safe sex in the future. Good luck. 