Medical Questions > Pregnancy Forum > First Trimester of Pregnancy Forum

Accuracy of Ultrasound During Pregnancy

Hello,

i am currently 28 weeks pregnant, with an edd of 3-30-07. I first found out when I was around 5 weeks pregnanct, according to my Dr. Via ultrasound. The first ultrasound only showed a sac w/out a heartbeat.

My question is that can an early ultrasound be off by 4 to 5 weeks in determining the age of the pregnancy.

Tx,
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replied January 7th, 2007
Extremely eHealthy
Re: Accuracy of Ultrasound During Pregnancy
anita66 wrote:
hello,

i am currently 28 weeks pregnant, with an edd of 3-30-07. I first found out when I was around 5 weeks pregnanct, according to my Dr. Via ultrasound. The first ultrasound only showed a sac w/out a heartbeat.

My question is that can an early ultrasound be off by 4 to 5 weeks in determining the age of the pregnancy.

Tx,


hello! I would say not because if you were further advanced in pregnany then there would be a visible heartbeat and the embryo would be bigger. If you were less advanced then you would basically not be pregnant at all because you were only 5 weeks at the u/s! I had an early u/s at 5 weeks and the heart was visible to be beating then and the baby was the size of a small bean.

Are you worried about your dates?
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replied January 8th, 2007
An early ultrasound is usually right on due to the different milestones that occur each week. I would say that it is the right due date. Only when you get further along, can it vary by a few weeks. Congrats!
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