Is this normal? Measuring 2 weeks behind?

Ok so according to my LMP which I tracked i should be about 7 weeks (but my periods for the most part are irregular)

On the ultrasound it showed I was about 5w 1d..

My HCG levels are about 17,000

There was the gest. sac which they measured & on the report it says "Yolk sac was not definitely seen"

does all of this sound normal? some people say that your dates from lmp are normally 2 weeks ahead is this true?

My uterus was measuring 9.1 x 4.7x 6cm if that helps any.

[Beccabb]

Because you don't have regular periods anyway it's possible you ovulated later, and if you measured 3 weeks then yours only really 3 weeks but they do add two weeks cos they can't pinpoints the exact date of ovulation

[Beccabb]

Measured 5 weeks**

[PetiteWonder]

You may have ovulated late, if that was the case it would be normal to be behind your LMP.  
If you know when you ovulateda nd that is not the case, then it may be a pending miscarriage.

Early US are tricky because if you are actually 5 weeks 1 day because you ovulated later than normal, then only seeing a gestational sac would be essentially normal.


Your LMP is two weeks ahead of your baby technically but I think when the US shows you measuring 7 weeks for example, it is based on the average expected size based on the doctors estimated, which would be using the LMP.. This may sound confusing but even though at 7 weeks, your baby was only conceived 5 weeks before, the measurements used in comparison is the average size at 7 weeks from the LMP