"doppleganger"

I thought there could of been a universal pagan explanation for what was going on, I guess not. I wasnt high... I wasnt drunk.. I did go to sleep afterwards, I dont remember if I was real tired.... I dont know if I was hungry.

Usually, there is no universal explanation to anything. Especially with things that have so many varying opinions, such as dopplegangers. Rule out mundane reasons, and study the idea behinddopplegangers a bit. That's probably the best we can give you.

Considering the vast array of pagan religions, there will unlikely be a universal interpretation of what seeing a double of one's self is; it would depend on the individual religion's philosophy.

Even then, there are many possibilities not related to religious philosophy which might explain seeing a double. Being very tired, for example, may lead to hypnogogic hallucination. It's when one's brain is so tired and (basically) begging for deep REM sleep that the hypocampus starts firing off random dream-like occurrences. I'm not saying it is what happened, but it is one of many possibilities.