hello there.. welcome to healthcaremagic.. well after going through your query i think that you are not pregnant at all.. i want to make some points clear.. 1) you had unprotected sex on 12th may which is 4 days after you got periods..which was a safe period.. 8 days before having a period and 5 days after the periods have stopped is a safe period where in even if u have unprotected sex there are least chances.. 2) if you had consumed ipill within 72 hours which is 99.99 % effective.. so there is no chance of you getting pregnant.. and there is a sideeffect of ipill in which you will get periods earlier than normal time.. so there is nothing to worry about getting periods earlier.. periods wil get regular in next or next to next month... nothing much harm can be caused by an ipill more than this..it wil NOT make you infertile or any other such sideeffect.. but if ipill is taken regularly and frequently then it may cause sideeffects.. nothing wil happen if taken once or twice.. remember that you are not pregnant at all... you wil not get any sideeffect like infertility or anyother complication.. and your periods wil be regular in sometime.. if u still have got doubt somewhere in your mind.. then get a pregnancy test kit whose name is velocit or pregkit.. which is available in any medical shop.. and get a pregnancy test done at home.. its very easy and you can do it by yourself..no need to go to doctor.. just read the instruction manual inside the kit and follow it.. i hope this solves your query.. i wish you a good health and happiness.. thanks & take care..