Calculating Conception Date: Understanding Due Dates & Fertility

Question
Hi, I'm concerned about my conception date. My due date is set to 9/9/10. I had sex on the 28th of November but took the morning after pill that next morning. The next possible conception date was around the 4th-5th of December. I'm concerned on which of the dates would agree most with my due date
Thanks, JOJo

Answer
Dear JoJo,

If your due date was determined via ultrasound to be 9/9/10, I would calculate your estimated date of conception would actually be 12/17/09, based on 28 day cycles.

I hope this has helped you and answered your question. I wish you well.

Brenda