Pregnancy Due Date Calculation: Understanding Your Girlfriend's Timeline

Question
Hi Helen

Im a bit confused, I had sex with my girlfriend in Aug 2008, her last period started on the 28july. She told me that the doctor predicted delivery on the 04 of April 2009 is this correct. She is now 9 weeks date 23/09/2008.

Thanks
Gotti

Answer
The due date doesn't make any sense. She's 9 weeks and her last period was on the 28th of July- that is exactly where it should be. However, her due date should be the 4th or 5th of MAY, not April. I'm guessing her doctor counted the months incorrectly. I recommend getting a second opinion and/or pointing this out to the doctor. While the LMP (last menstrual period) and how far along she is perfectly coincide, the due date is off by a month.

Please let me know if I can help you further or with anything else.

Best wishes,
Helen =)