I used postinor 2, 36 hrs after the intercourse and the second tablet 12 hrs after, after 72 hrs i had urine test which was negative. Today is the 96th hour of intercourse and my period is yet to come, but i do feel like i m having pre menstrual pain i.e. feeling like m y period is coming, but i m having much discharge on my panties. When precisely will i have my next period