You didn't pass out, did you? I've passed out once while cutting, even though the cut didn't bleed much, and it took me a little while to piece together what exactly happened after I woke up. I think it was because of the pain, or the shock of the depth of the cut. Anyways, it was the scariest night/morning of my life, and I still don't even remember parts of it.
I really hope that's not what happened with you. Please be careful.
Nomad