So I bought a Doppler and I just got it in the mail so of course I'm playing with it. I found a heartbeat :) The only thing is, I found one on the left and right side of my abdomen which I thought was weird, so maybe it doesn't work right or something. 😁
I think u r picking up ur own pulses. You have major arteries that run on both sides. I bought one when I was pregnant too, and it was until about week 13 that I could pick up my baby girls heart rate.
Usually it can pick up your uterus's pulse. It'll be lower, like your own.