Ultrasound accuracy for dating Free live sex chat romes in chesterfield

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If the ultrasound date is within seven days of your LMP date, we would stick with your LMP date.

Ultrasounds done later in the pregnancy are less accurate for dating, so if your due date is set in the first trimester, it shouldn't be changed.

but the dates you gave and sizes are just really off.

Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 - 5 days of accuracy.This is presuming that the pregnancy is actually at this stage of development.Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected.At about 7 weeks a tiny fetal pole and heartbeat can be seen.At less than 5 weeks, nothing may be seen so would need to check blood and urine results before planning for sono. Read more See 1 more doctor answer Kyl: at that early stage we may see a decidual (pregnancy) reaction in the uterus and a small gestational sac.

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