Anyone have ears that crackle like rice crackles?

It started out with an ear infection about 8 months ago, ever since then my ears crackle but only when I swallow or yawn, or I can make them do it by doing those things.
I also have buzzing too now. I went to two Doctors and they said my ears looked fine and healthy. Beautiful in fact.
I went to an ENT who said he couldn’t see anything, but I’m sure he didn’t look ‘into’ my middle ear, if that’s even possible.
Now I’m scared it’s a tumor growing in my ear.
Does anyone else have this?
Does anyone know what it is?

As an after thought I notice it more when my sinuses are blocked.