I for the past few weeks I have been falling asleep on one side of the bed and waking up on the other. I was wondering if that is a sign of bad sleep and what causes it. Is it a bad thing?

Perfectly normal.

Okay that seems logical. But does it mean you are in REM sleep or just sleeping badly?

It means that you move around in the bed to make yourself more comfortable.

Perfectly normal.. we change positions dozens of times every night while asleep.

JB