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Doctor insights on: Ultrasound At 7 Weeks

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Are ultrasounds accurate at dating conception at 12 weeks?

Are ultrasounds accurate at dating conception at 12 weeks?

Much more than: Later in gestation. First trimester ultrasound is most accurate at estimating gestational age within 5-7 days (depends on the center). It trails off after that. General rule: 2nd trimester scans for dating are +/- 14 days and 3rd trimester is the least accurate (+/-21 days). ...Read more

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Dr. Michael Gabor
2,274 doctors shared insights

Sonogram (Definition)

An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more


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Im 7 weeks pregnant from ivf, hCG rising, now at 20700. 7 week scan had gest sac @ 13mm and yolk sac, no fetal pole or heartbeat. Is pregnancy doomed?

Im 7 weeks pregnant from ivf, hCG rising, now at 20700. 7 week scan had gest sac @ 13mm and yolk sac, no fetal pole or heartbeat. Is pregnancy doomed?

I am afraid so.: Your transvaginal sonogram should have shown a fetal pole and heart tones after a beta HCG level of 6, 000. Your rei specialist can fill you in on the issues of early pregnancy failure after ivf, which include molar pregnancy, blighted ovum, heterotopic and ectopic pregnancies. At your age, you should achieve a successful pregnancy within 2-6 ivf cycles. Best of luck! ...Read more

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Ultrasound done at 6 and 7 weeks. At 7 weeks ob saw heartbeat and said to count back 5 weeks to figure out conception date. Is this correct?

Ultrasound done at 6 and 7 weeks. At 7 weeks ob saw heartbeat and said to count back 5 weeks to figure out conception date. Is this correct?

Yes this is correct.: It is an approximation, but should be close to the conception date, say /- 3 or 4 days. Caution: it absolutely will not discriminate between 1 or 2 days apart. ...Read more

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By LMP I am 7 weeks pregnant. Ultrasound at 6 weeks 3 days showed irregular sac, no heartbeat or yolk etc. No flow around sac. Hcg rising. Miscarriage?

By LMP I am 7 weeks pregnant. Ultrasound at 6 weeks 3 days showed irregular sac, no heartbeat or yolk etc. No flow around sac. Hcg rising. Miscarriage?

Early pregnancy: It's too soon to be sure what is going on. Often a woman will ovulate later and the lmp will not be accurate. The best option is to repeat the beta-hcg every 48 hours until 3 results are performed and a repeat ultrasound 1 week after the previous was done. That will usually solve the question. ...Read more

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Four first trimester ultrasounds done at 7 8 10 12 week all come. Up with same conception date. What's it mean??

Four first trimester ultrasounds done at 7 8 10 12 week all come. Up with same conception date. What's it mean??

Good estimates: One scan gives a good estimate of the conception date. A second scan that gives the same estimate, just gives more confidence that the first scan's estimate is accurate. Accurate means plus or minus one week - because nobody knows exactly when conception happens. However, if a woman knows exactly when she had sex, that can point to the conception date. Normally, people don't get so many scans. ...Read more

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What happened at 7 weeks 3 days of pregnancy?

What happened at 7 weeks 3 days of pregnancy?

I am sorry: But there isn't enough information to answer this question. Did you have a problem with a pregnancy at that time. Please clarify ; re-ask. ...Read more

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Hcg rose 60 percent in 72 hrs at 7 weeks along. Sound ok?

Hcg rose 60 percent in 72 hrs at 7 weeks along. Sound ok?

Not quite: While there is variability, the normally it doubles every 48 hours. This does not necessarily mean you have an abnormal pregnancy, but this type of increase can be seen with an ectopic/tubal pregnancy. Make sure your doctor is following you for this. I'm assuming so since you got 2 blood tests in 72 hours. ...Read more

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Are ultrasounds done at 6 weeks more accurate than ultrasounds done at 10 weeks?

Are ultrasounds done at 6 weeks more accurate than ultrasounds done at 10 weeks?

Prenatal?: If you're asking about a prenatal ultrasound, no not necessarily. If anything, a 10 week ultrasound may give you more detail you may not be able to see in the 6 week ultrasound. However, the 6 week ultrasound is necessary to check on the general wellbeing of that tiny fetus and make sure it is viable. ...Read more

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7 weeks from LMP after clomid (clomiphene). Ultrasound today showed gest. Sac and yolk sac. Only measured 5 1/2 weeks. Not good is it?

7 weeks from LMP after clomid (clomiphene). Ultrasound today showed gest. Sac and yolk sac. Only measured 5 1/2 weeks.  Not good is it?

Could be, wait: If your ovulation and conception on Clomid (clomiphene) was late, which it can often be, these findings may be okay. It all depends on when the ovulation happened. Hold on for the next ultrasound(s) and see how things progress. Bets of luck! ...Read more

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Would an emergency room transvaginal ultrasound miss any signs of pregnancy at 7 weeks pregnant?

Would an emergency room transvaginal ultrasound miss any signs of pregnancy at 7 weeks pregnant?

Depends: If your dates are absolutely correct, and you have not had any irregular bleeding, and you have had regular periods in the past, then at 7 weeks gestation, an ultrasound would reveal pregnancy signs. So if the ultrasound was negative for any intrauterine or extrauterine pregnancy, usually, this is corroborated with quantitative beta hCG levels. Hope this helps. ...Read more

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Internal ultrasound dated me at 6.2 weeks. Heartbeat was seen and measured at 100 bpm. Is this okay?

Internal ultrasound dated me at 6.2 weeks. Heartbeat was seen and measured at 100 bpm. Is this okay?

Normal...: The heart starts beating around 5 weeks gestation and slowly increases in bpm... at 6 weeks 100 bpm is in the expected and normal range. ...Read more

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Are transvaginal ultrasounds accurate for dating at 4-5 weeks (only a sac was seen) and at 11 weeks?

Yes: While the dating based on sac size is questionable, it is usually accurate to within a few days--depends on type of ultrasound. An ultrasound at 11 weeks, should be within one week. ...Read more

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Empty gest. sac at 7 weeks 4 days by internal u/s. Typical cycle is 34+ days. Could the measurements be wrong?

Empty gest. sac at 7 weeks 4 days by internal u/s. Typical cycle is 34+ days. Could the measurements be wrong?

No:-(: An empty sac at this gestation usually means an unsuccessful pregnancy. Blood work will confirm this. Discuss this with your doctor and your further plans. All the best. ...Read more