Too early hon

Its pretty unusual to find it that early.
Both times I hired dopplers I couldn't get it before 12 weeks and even then I had to look for up to a half hour and would only get it fleetingly before it moved away. It takes alot of patience and persistence even at that stage. I'd imagine at 9/10 weeks it would be damn near impossible.
Put it away for a couple of weeks, you'll just drive yourself crazy otherwise.
Hearing placental sounds is a good sign though