At home Doppler

Is it safe to use an at home Doppler daily or every other day? I’ve read conflicting things. I can usually find the baby’s heartbeat within minutes and only listen for a few seconds but I’m just wondering if it’s safe. I am 11 weeks and just want to make sure my baby is okay. I have had 3 miscarriages this year so I’m a little terrified about losing this one too. Please let me know if anyone asked their docs or anything. I plan to ask at my next appointment, I just wanted to know before then. Thanks!