Phycosis caused by Celexa ssri?

I developed phycosis from celexa an ssri. I have never in my life had this before. and i know that this is not me me but the celexa causing it. I have been off of it for almost 3 weeks. I feel alot better but I am still suffering from depersonilization and derealization. Which i also developed the 2nd day of taking celexa. is this permanent? I hate antidepressants and will never take them again! i am going to start going to a homeopathic dr. Celexa totally screwed up my brains chemistry and it scares me:( did anyone have a similar expierance?