Is there a difference if postinor two is taken one pill 12hrs after the other or both at once? The instructions allow both methods. Took postinor at once 60hrs after sex on day 18 of 24d cycle. Period is 3 days late. Had sore boobs(normal to me) but stopped the morning I was supposed to get my period. I feel normal just bloated. Have a very dry vagina which is unusual and a bit of bloating. Very stressed and scared. What to do? When to take pregnancy test?