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When they do an ultrasound, they measure the baby's head and that's how they determine how far along you are. So if your baby's head is smaller than average, then they would give you a farther due date; If it's bigger than average they would give you a closer due date. Please remember your due date is an estimated guess, not the actual date you will absolutely deliver It depends how much the difference is and at what stage you have the ultrasound. At six weeks ultrasounds are accurate to within 2-3 days, by 12 weeks they are accurate to within 4-5 days and by 20 weeks they are only accurate within 5-7 days.

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Q: Is it possible to be further along in your pregnancy than what your ultrasound says?
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If you are pregnant and your blood work says you are further along than your ultrasound which one is more accurate?

Blood work cannot tell you how far along you are as the levels vary so much from pregnancy to pregnancy, go with the ultrasound.


How far along in the pregnancy do you have to be to get an ultrasound on howrse?

8 Months


How can one tell how far along they are in pregnancy?

One can tell how far along they are in pregnancy by having an ultrasound. An ultrasound measures the fetus and then compare that measurement to what an average fetus is. If it matches to a 3 week fetus it means that one is 3 weeks into pregnancy.


When the doctor tells you how far along in pregnancy you are is he correct?

Majority of the time but a ultrasound is very accurately


You are pregnant in 10 weeks your doctor told you that your baby is a girls that possible to determine the sex of a baby at this stage of pregnancy?

It is not possible to determine the sex by ultrasound until about 19 weeks along. If you do an amniocentesis, you can normally find out around 12 weeks.


Is it possible not to detect a 3 month pregnancy on ultrasound?

It is absolutely impossible not to see SOMETHING on an ultrasound at 3 months pregnant. Pregnancies are most commonly confirmed without question at around 8 weeks pregnant. So, given the ultrasound is done by a qualified technician, there is no way you could miss a pregnancy that is 3 months along.


What does it mean during pregnancy when you have a ultrasound and they can see a sack but do not see the baby?

It can be one of two things either you are not far enough along for the baby to appear on ultrasound or you have miscarried, which in that case you would have been made aware of when they did the ultrasound.


How far along in pregnancy do you have to be before you know the sex?

Typically gender is first found out during an ultrasound performed around the 16 to 22 week point of pregnancy.


What does it mean when an ultrasound does not show anything at 5 weeks?

External ultrasounds can only detect pregnancy when you are more than about 5-6 weeks wereas if you have an internel ultrasound they can detect pregnancy from as early as 4weeks. In answer to your question you are either not as far gone as originally thort and would have to have a internal ultrasound to dertimine/detect pregnancy or you are just not pregnant.AnswerI'm suprised that they wouldn't tell you when you got it done. The fetus at that age is so small its very possible that you could not see it. Or you are not as far along as you thought and it was just a yolk sack.


What are some of the reasons your docotor orders an ultrasound in pregnancy?

The most common reason for ultrasound in early pregnancy is to determine how far along you are and figure out a due date. Later pregnancy ultrasounds are usually just routine to make sure everything is normal as the baby grows. Most commonly, a doctor will do a 20 week ultrasound where they will do all of their measurements and make sure everything is developing normally, and tell you the gender if you would like to know. After the 20 week ultrasound, unless you are having complications, it is unlikely that you will get another ultrasound until towards the end if the pregnancy.


You took a pregnancy test it came back positive your breast had dried droplets on it how long are you pregnant?

The only way to determine if youare pregnant, and how far along you- are is to have a blood test, or to have an ultrasound to confirm the pregnancy.


What do the doctors have to do to remove a tubular pregnancy?

Depending on far along you are, I believe certain drugs can remove a tubular pregnancy. If the pregnancy is a little further along, Usually a fallopian tube is removed in order to prevent erruption, also to save fertility.