no baby in the sack at 5 weeks

my levels have doubled snice my last lab; however my altra sound doesnt show any thing other than the sack at 5 weeks but no baby. Is there reason for me to worry.  

[waitn838]

no reason to worry...if your levels are doubling that is all you really have to go by right now...i had the same thing happen and then at 7 weeks there was the baby and the heart beating...its just too early to see the baby

[julianovak]

First of All, why did they do the ultrasound that early. >???????? at five wks, fetal age is only 3 wks. OBV you cant see anything.

[Melka76]

I had an us at 5 weeks - I was undergoing IVF and they just wanted to see if there was a sac and possible fetal pole - I did not see the heartbeat until 6 weeks.. I would not worry - They do perform us that early if you are undergoing fertility treatment - to confirm .. I have had those with three of my four pregnancies - the only one I did not have an us that early was the one I was not TTC... when are you scheduled for your next us...a sac is a good sign that early!