My boyfriend and I had unprotected sex last monday, july 14, 2014. We didnt do it long cause he was afraid to cum inside me so he stop. He never came or anything but I know he still could have pre-came since they cant feel it coming. I am on birth control and I took the Plan B pill a few hours after having sex just to be safe, i never missed a day of my birthcontrol we just wanted to be as safe as possible. Today is tuesday july 22, 2014 and when i should possibly start my period. I should start when i start the last two reminder pill in my birth control pack which i should today and i havent started yet. Is it possibly thar the morning after pill can delay your period a few days?