I’m 18 weeks and we rented a fetal doppler heart rate monitor from Belly Beats on the internet. We were able to hear the heartbeat the first 2 nights, but for the last 2 we haven’t been able to find it. I don’t know how reliable these dopplers are, so I don’t know if I should worry or what. What do you think? Let me know your experience.

My friend is letting me hold her fetal doppler that she is not using anymore, how far along do I have to be to be able to use it and do I need to get an okay from my doctor. Also, how often can I use it? Thank you!