Fetal doppler

Well, I caved. And bought a fetal Doppler. Didn’t really want too. But felt like it would ease my mind between appointments. So let me say, what a process it is to find his heartbeat! At first I thought I had it, but when I watched some YouTube videos I found out it was my heartbeat lol. So a little more investigating and I found him! Like 40 minutes later. Patience is definitely key here. I couldn’t actually get a reading to how fast his heartbeat was but it was definitely different from when I heard mine so it has to be his right? Someone give me their opinion. I’m a newby lol. I think he’s just moving around so much in there seriously he wouldn’t stay still