I had unprotected sex and although he pulled out, who knows if he did it in time. I took the Plan B 6-7 hrs after the incident and am not sure if I was fertile or ovulating at the time. For the first two days, I felt really tired (but that could also be because I wasn't sleeping well for obvious reasons). I have no other symptoms now. Today is the 3rd day since I have taken the pill and still have not gotten any bleeding; it is not my usual time for my period, but it's known to be irregular anyways. I am in my early 20's and naturally very skinny. I understand that the pill has a 95% efficacy within 24 hrs, but can anyone tell me if my chances of not getting pregnant is any higher and/or what else I could be doing to help it work (other than wait it out... )? Thanks in advance!