Doppler at 9 weeks in office and didn’t hear anything

Anyone have a Doppler in office at 9 weeks and not hear anything but it still turn out ok?? She said from the start it was probably too early and most likely wouldn’t hear it before she even started.... now I’m seeing post on here of AT HOME dopplers catching a heart beat 9 weeks. I have an appt at the end of 10 weeks to do another in office Doppler. I wasn’t worried till I started seeing the in home post of them..