I Can Feel/Hear My Heartbeat in My Ears at Night When Lying on My Side (NOT Pulsatile Tinnitus)

When I'm lying on my side (on my ear) I can kind of feel my heartbeat thumping in my ear, I've looked this up and all I see is "you have pulsatile tinnitus" but this really isn't the case. My actual tinnitus is a constant hiss with some other sounds in the background.

Anybody else have this? Does it mean something?

 

I hear it when I do the same. I think its pretty normal but it can be more noticeable if are having palpitations. Do you have anxiety? Sometimes I'll lay on my back so I don't have to hear it.