Was It Kundalini?

i was meditating in my house...under a tree...
after a while (i was in a deep state) i felt this wave like thick honey slowly going up my spine
very deeply and slowly back and forth pushing upwards (not side to side), but like a fat snake or fat thick honey wave going up my spine...
it's hard to describe....but it reminded me of thick honey in the shape or thickness of a python....
i don't know exactly how far it went up.. think it was not quite to the top yet..., i was shocked and ran to my bedroom...and there had an orgasm...and felt embarrassed...

this was in 2003....
i hardly ever meditated after that because after years of searching for answers, i read you shouldn't meditate without guidance from a teacher knowledgeable in kundalini....(i never found one & gave up)

at the time of that experience i never even heard of kundalini....i was not trying to do anything ....just plain meditating like usual....

was it kundalini ????

BTW ....Hi ....my first post....thank you !!!!