I’m concerned after using my home Doppler..

I’m about 16 weeks pregnant. I decided to try my home Doppler today after a few weeks because it was making me worried.

I went to use it and at first I couldn’t hear anything, but then I heard voices. i could hear a radio show instead of my babies heartbeat

I’m seriously not joking. at first I thought it was creepy like wtf,...

But I’m very close to radio towers so is it possible to pick it up from there? That’s the only logical explanation I could think of.