Placenta sounds on Doppler

I stupidly bought a Doppler for peace of mind. I’m 11 weeks and so far I can only pick up the placenta (I’m sure it’s the placenta as it sounds just like the whooshing wind sound I heard on youtube). I’m now freaking out of course and when I mentioned it to my midwife she scolded me for using a home Doppler and assured me all was perfect on my ultrasound last week and that hearing a placenta on Doppler means all is probably well as the placenta wouldn’t be pumping if the baby didn’t have a heartbeat. Anyone else using a Doppler and had similar experiences