Ultrasound question & Due date

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Ultrasound Question & Due Date

2 posts on this thread and the last post was on November 17th, 2007 3:33 PM

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HollyB - November 16th, 2007 10:46 AM

[Original Post]

On 13 November, I had my first OB appointment.
The Dr. performed an ultrasound which showed the baby as 7 Weeks 4 days.

My last menstruation was 9 September. I am concerned since the Dr. decided to change my due date from 15 June to 27 June. Does this sound right?

When I type in my last menstruation on some of the baby sites, it comes back with a different due date but states the baby is the same age as the ultrasound.

I am confused on why there is a 2 week difference on my Due date.

Grandpa Viv - November 16th, 2007 6:01 PM

There may be a mix up on the ultrasound. The age of the fetus can be given from last period or from conception. Your Sept 9 menses ties in with conception around Sept 22 and a fetal age of 7 weeks 4 days on Nov 13. Alternatively, you may have ovulated a couple of weeks late that month. Good luck!

Gemini_Girl - November 17th, 2007 3:33 PM

Hi, first of all they go by your last period date but if the baby is measuring, at least a week either way, they will change your due date based on your u/s, same happened to me at my first u/s my due date changed from Jan 26th to Feb 7th, I think its quite common for this to happen

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