I had sex on 3rd august, he did not cum inside her, but precum entered may be, I took a ipill after 48 hours, no side effect of pill, my periods came early 2 day 21st august, she tested on 29th its negative, I missed second periods on 21st september (after taking the pill, I retested again on 25 september its negative, next day I started my periods I mean 26 th september please tell me I am worried,