I see no indication of schizophrenia, here! My guess (and it's just a guess) would be that you were having an anxiety or panic attack and the dissociative symptoms were a way that you were trying to cope with it- shutting those feelings down. As for your thoughts about going insane, yes that can be a component of an anxiety attack. Don't read too much into that. I think you're going to be just fine! But you certainly may want to see a counselor. They can help you deal with this

Angela