Hello
If I were you I wouldn’t compare private and nhs scans, as previously stated they use different equipment so I don’t think in that sense there’s anything to worry about
i also think not seeing the heartbeat is nothing to worry about yet
the key is if the embryo has grown at all at your follow up scan
ive literally just had it happen to me where I went for an early scan at what should have been 6 weeks, embryo measured 5+5 no heartbeat
went back a week later and embryo did have a heartbeat by this point but had only progressed to measuring 6w, so around 2 days growth over 7 days
I ended up miscarrying
not trying to scare you but when I was looking for guidance I appreciated honesty
I’m sure your pregnancy Will be absolutely fine though, so long as there’s progress with your babies growth at the next scan I’m sure you’ll be fine. But only judge based on the same equipment ie. Compare your follow up nhs scan only to the new nhs one as private ones will measure differently
i was told even if baby measures behind what you expect as long as there’s growth progression all good
take care
Wishing you all the best
Kerry