Anyone else experience this?

So for the past few weeks I've been waking up at 3:23 EXACTLY every morning. This isn't the first time either. I seem to go through cycles, where I go months or weeks sleeping normally, then all of a sudden I'll be waking up at the same time every morning (always from 3:00-4:00, the last time this happened it was always at 3:30, now it's 3:23) and then things go back to normal, etc etc . It's happening again, and for the first time I've decided to google it. Everything that popped up was a bunch of spiritual and demonic stuff. I don't really believe in demons and spirits per say, but I don't disbelieve either exactly.

So anyways, has this happened to anyone else before?