Anyone else experiencing deja vu like flashbacks of unknown places and times ?

I had three different ones yesterday where for a split second I was in a strange place and in a time period that I've never lived in and I don't recognize.

The weirdest thing is that for that second I hear a low hum & get a feeling like gravity is pulling at my chest, like trying to pull me into it.

It almost feels like an out of body experience when I'm wide awake.