Should I be worried??

Ashley
I had a trans vag us 2 weeks ago at 8 wks with baby heart beat of 159 baby measured 7wks 6 days That would put me at 9wks 6 days today I went for my regular check up and they were not able to find heart beat on regular Doppler! Doc says it's possible baby is still too small. Anyone else have this happen or any advice please please!!! Thank you