I know how frightening hallucinations are. I think it's a very good idea to keep your pdoc informed about this. Your pdoc has you on those medicines for a reason. If you'd take them I'm almost positive that they'd help with the hallucinating. Does your pdoc have a number you can call after hours? It wouldn't hurt to give him a call if things are happening that scare you that bad.
I hope you do feel better. Please keep your pdoc informed.
Jenn