Drifting reality?

Multiple realities

There has been for over 60 years a proper scientific theory called the multiverse. It was first propagated by Hugh Everett 111. The idea is that there may be infinite copies of you existing in multiple realities.

This many worlds interpretation of our reality suggests that every time you make a decision a new reality splits off. The consequences of that action plays out in that parallel realm. So there are multiple world and copies of you, similar but not the same, living out all possible versions of your life.

I find this very interesting but there is one snag. Just lately I have caught my reality changing, just slightly but noticeably, and then changing back. What could be going on? Am I beginning to drift? Or is our whole reality system becoming unstable?