How can you tell if you're schizophrenic?

I'm having thoughts about whether I could be schizophrenic. I am kind of paranoid, and I also think I have a relatively very good memory. I can also say some gibberish that I don't understand when I think of things that I regret. What do you think, could these be signs of schizophrenia?

probably, yes. I say check yourself in. Preferably in a place with no internet access.

A programming forum is a way better place to ask about this than, say, a DOCTOR.