Home fetal monitor

I bought a home fetal monitor today. I used it for like 5 or 10 minutes.

I found the heart beat pretty fast- but then I lost it. I spend a lot of time trying to find it again, and found something - but the heart rate was around 80, and the sound wasn’t as strong as the first one- so I think it might be mine. the first one sounded faster - but I didn’t get to counting.

Now I’m nervous. For what I don’t know. Was it really the heart beat the first time? Could I hurt the baby using it for 10 minutes (I know they are well protected in there - but man do I worry about EVERYTHING)

Anyone who has experience with a fetal Doppler? It’s the angle sound.

(I’m 15+3 today)