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what should be size of sac in 8 weeks

my wife is on her 8th week of pregnancy...doctor told her that the size of sac seems to be small...is this a big problem? her gs was 6.3 mm in her 6th week...what should be the actual size??i m not having that much knowledge in this subject ..pl help regarding this
Best Answer
202436 tn?1326474333
I don't know about the measurement of the sac but at 8 weeks you should more than likely see a yolk sac and fetal pole and possibly the heartbeat as well.  Were any of those present?
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342988 tn?1299782356
i have a photo of an 8week ultrasound in my profile
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Avatar universal
thanks a lot....
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1188979 tn?1311264889
at 8 weeks its supposed to be 29mm

im confused

did they did the ultrasound at 6 weeks from lmp or at 8 weeks from lmp????

cause you asked for how much is supposed to measure at 8 weeks but you also said that it was measuring 6.3mm on her 6 week ultrasound???
Helpful - 0
1188979 tn?1311264889
at 6 weeks the gestational sac is supposed to measure about 14mm

is not much of a difference so i would say everything is probably alright, my gestational sac was measuring for 6 weeks when i was supposed to be 8 weeks from LMP becuase i actually ovulated late.

gestational sac per weeks:

4 3   
5 6   
6 14   
7 27
8 29
9 33
10   
11   
12   
13   


at 5 weeks the gestational sac measures 6mm, so maybe on her 6 week ultrasound she was actually about 5 weeks aprox

not everybody ovulates on day 14 i ussually ovulated at about day 27

remember pregnancy is counted from LMP (last menstrual period) and if she dosent have a regular 28 day cycle every month she would not be 8 weeks now maybe she ovulated a bit later and she is actually about 7 weeks now.

maybe she ovulated in day 20 or something like that of her cycle instead of day 14.



i dont know why the DR didint explained to you or her that she could just had ovulated a few days later and that everything would probably be ok.

i guess you will just have to wait till the next ultrasound to find out for sure but don't stress to much, i really think everything is ok.

Good luck
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1188979 tn?1311264889
maybe she is not as far along as she thought, not everybody ovulates on day `14, did they see anything else on the sac.
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