Using fetal Doppler

Sarah
I've had my fetal Doppler since I was pregnant with my first child and used it a lot towards the end of my pregnancy but never in the beginning. I'm now 10 weeks 3days and I can't find the heart beat 😞 I'm trying not to panick bc I had a scan @ 7weeks 5 days and saw the heart beat! Anyone else having trouble finding it at home?