Empty Sac Measuring 3 Weeks , 5 Weeks Lmp

Jane Foley's picture


Dear Ms. Ultrasound,
Hi. I had my lmp about Dec 16, could be a few days later. I have 30-33 day cycles. HPT was positive 1/14 HCG level was 18 that day HCG was 67 1/16 319 1/19 and 1528 1/22 had an u/s 1/23 because of slight pain and pressure on right side ( had an ectopic on right side FEB 08 and had lap surgery kept my tubes). Had a miscarriage at 5 1/2 weeks August 08.

The u/s tech said sac measures more like 3 weeks and it is empty. I have a cyst on right ovary too. said to come back in 7 days to see if it is not ectopic and if it the fetal pole is visible by then? is this pregnancy still ok?


Hello, It seems you were most probably too early to see anything in the gestational sac. The right thing to do is to wait at least a week to ten days and repeat the ultrasound to determine if there has been any growth. Please note that you were probably 5w at the time of your ultrasound not 3 weeks. You may have been 3 weeks from conception but this is not how a pregnancy is dated. You count from the first day of your last period. This means you always add in those extra two weeks.

At 5 weeks, a gestational sac is normally seen, many times without an apparent fetal pole. You will also see a cyst on one of the ovaries. The cyst is a normal part of a first trimester pregnancy. It helps regulate some hormones until the placenta is completely formed. The cyst disappears at around 12 weeks.

I think at your next ultrasound you will see a fetal pole with a heartbeat within!!!

With Regards,
-- Jane RDMS