Do you need certain gel for a doppler machine?

I use off brand KY jelly. Works great 👍🏻

I just used whatever was closest to me, most of the time it was my moisturiser 🤦‍♀️😂 it worked though😂

I will say though, home Dopplers aren’t always accurate so don’t freak out if you’re unable to find the heart beat, and where little one is constantly moving you may not find it in the same place as before x