Duration of 2cb???

Hey everyone so I stupidly took 2cb while not being in the right mental space for a first psychadelic experience, it's been 17 hours since I took a mdma/2cb pill and I still see and hear things. My friends told me it should've been over long ago so now I'm questioning whether it's really going on or if I have a prolonged psychosis somehow. Any all advice welcome please help._.