Have you tried searching the forum for the same question? Only, I know there are several threads of this sort, including one I posted on myself a while ago. If you search for "female ejaculation" you should find lots more replies. I for one have never had a g-spot orgasm, but frequently ejaculate. Sometimes without having an orgasm at all... And sometimes I'm not sure if I've pee-d as well. I think it's entirely possible that you ejaculated. Check out the other responses...
Hope that's of help.
