Question: Does this happen to you PP?

Brittany

So I have a Apple Watch. I wear it all the time, even when I sleep. So when I get to take a nap like say 10 or 20 minutes my watch will say that my heart rate drops below 45 for 10-20 minutes or more. I asked my OB about it because this has never happened before. He said this was normal PP but I’ve never heard of this before. So does any moms have this problem?