Long story short... had sex with boyfriend Dec 29, 2010 and then had a period two days later that lasted only a day. Got sexually assaulted January 20, 2011 took generic brand of Plan B pill but was off 3 hours and I never bled after that... well I did have some light bleeding. My due date is October 9, 2011. Is it possible if its my boyfriends? I had a very irregular period. Was never on time and always lasted either a day or two.

If your due date is October 9, your probable date of conception is on or around January 16.

However, the ONLY way to know who fathered this child will be after the baby is born and a DNA test is performed.