U.S. doctors online nowAsk doctors free
Afghanistan
A 37-year-old female asked:

Can a 9 week fetus look 7 weeks?

1 doctor answer5 doctors weighed in
Dr. Janis Fee
Obstetrics and Gynecology 34 years experience
Maybe but not likely: You have to understand that the usual way to date is weeks from the menstrual period, which is presumed( but not always )2 weeks from conception. But, if a good ultrasound is done and the first third of pregnancy, it should be accurate to within 5 days, not 2 weeks off! if within 5 days, they way still go by the menstrual period or probable date of conception... Talk to your ob! hope this helps.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

Similar questions

Afghanistan
A 37-year-old female asked:

What does a 7 week fetus look like can you describe?

1 doctor answer2 doctors weighed in
Dr. Jane Van Dis
Obstetrics and Gynecology 19 years experience
Google it: Why don't you go to www.Google.Com and type in 7 week fetus and then look under images. That will get you a lot farther than any description i can provide. On ultrasound at 7 weeks it looks like a shadowy grey tube with 4 little arm buds, a yolk sac and maybe one can see an amniotic sac as well.
Afghanistan
A 37-year-old female asked:

Can a possible 9 week fetus look and measure 7 weeks instead?

1 doctor answer2 doctors weighed in
Dr. Deborah Smith
Fertility Medicine 36 years experience
Concerning: It could be your dates are off or the baby is growing correctly. A repeat evaluation in 2 weeks will be able to tell.
Canada
A 32-year-old female asked:

Can a 8-9 week fetus measure big and be mistaken for a 12 week fetus?

1 doctor answer3 doctors weighed in
Dr. Carol Peters-tanksley
Obstetrics and Gynecology 36 years experience
No: The difference between 8-9 weeks pregnant and 12 weeks pregnant is very different on ultrasound. At this early stage, an ultrasound measurement is accurate to within a few days of how far pregnant you are.
Canada
A 32-year-old female asked:

Can an 8 or 9 week fetus measure 6.2cm, or is this too large?

2 doctor answers4 doctors weighed in
Dr. Jay Park
Dr. Jay Parkanswered
Pediatrics 51 years experience
longer than average: Average crown-rump length of fetus at 9 weeks is 5 cm.
SC
A 33-year-old female asked:

Can a 6 week fetus be mistaken for a 7 week fetus? Is it more common the other way around?

2 doctor answers2 doctors weighed in
Dr. Jack Mutnick
Allergy and Immunology 18 years experience
Yes: Yes to all of your questions. The measurements are simply a "good estimate" or a guesstimate. The larger the fetus grows, the more accurate the measurements.

Related questions

A 37-year-old female asked:
1 doctor answer2 doctors weighed in
A 28-year-old female asked:
1 doctor answer1 doctor weighed in
A female asked:
1 doctor answer1 doctor weighed in
A member asked:
1 doctor answer1 doctor weighed in
A 31-year-old female asked:
1 doctor answer2 doctors weighed in
Last updated Aug 22, 2013

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.