i never miss my periods,its only 1 to 2 days delay not more then that. i already have a 16mnths ols son and at this moment i am not planning for another one.so i am expecting my periods to start today or tommorrow latest but i am just worried hat i had unprotected sex 7 to 8 days before my period starts..so is that safe or have i done a mistake.if you can please let me know.is there any medicine which i can take now.do you think it will work now.