Quoting Dawn&Leila +1!:" Got my doppler today and tried it out. I think I found the heartbeat, it was around 143 .. But it went ... [snip!] ... around 143 .. But it went away fast. After that i couldn't find it and im freaking out that maybe i didnt find it. Any tips??"
When you think you've found it, hold your other hand up to your chin and feel your pulse. If it matches, its you. If it's faster, its baby.
Btw the number doesnt pop right up on the doppler thats just random numbers. It skips around a lot, you have to find the heartbeat and hold it steady for it to regulate to the right bpm.
It's most likely you found your own though, there's a few arterys down there that are really loud