Whats REALLY Going On?

I began to notice today, actually I noticed it a few days back that Jerry has begun to experience auditory and some visual hallucinations and it really is beginning to worry me some...to the point where Imm losing sleep...For example today when I was visiting him during his lunch time that he was hearing cats or kittens in the background..mind you, I didnt hear a damn thing, then a short while later he was swatting at a fly, bug, bee that apparently wans there etc...and becoming quite flustered, this began to worry me because a short time later ..He seemeed to 'recall' a conversation that he swears he had w/ me meerly minutes earlier that we didnt have....
First thing tomorrow morning Im going to walk over to the Rehab (which is just 4 streets away from our house luckily) and demand an itemization of EVERY dose of medicine that theyve been getting him

UPDATE.....

I wrote preceeding paragraph yesterday in the heat of anxiety and frustration but as of today many questions were answered, to my satisfaction...But I will keep an eye on what they give him and Jerry has promised me that hed keep record as of what and what time they give him his meds in case things start going squirrely Ill know to let them know..Today was a good day I was eloated to see that he looked better than he has in days..he was lucid, and rather jolly for the duration of my visit..His case worker named Diane even came in and confimed an appointment/meeting the 3 of us will be having on Friday afternoon, to alleviate all concerns and to ask questions in hopes to them being answered