I had unprotected sex January 1st at 5am (2nd day of fertile week) I took a plan b January 3rd at 1pm . As the days are goin by I noticed that I frequently feel the need to urinate should I be afraid ? Or maybe its just my mind ..also do you guys think I took the plan b in enough time ?? It said take within 3 days

Also noticed that I've been sleeping a lot. My period is due Friday could it be PMS?