Unable To Get Up From Sitting Position And Was Totally In Another Dimension

HI Last Thursday night I wake up and was in complete incontinence, couldn t get up from sitting position. I could not stand no matter me and my wife tried. I thought my wife was my mother who has been dead for 12 years. I m 65 and take lisinopril . I was totally in another dimention BUT had no lose of anything that would suggest a stroke. I ve had multiple back surgeries and am on oxycodone 20 mg q4-6 hrs plus morphine60 mg 3 times a day. All medications are taken religiously without question. Now 3 1/2 days later i m very stable and have all my functions. IT seems to me that I went into a very deep sleep and couldn t snap out of it. I ve lost 20 pounds which I needed to do but not like this. I m slowly getting back to food (toast and chicken broth). My I&O is fine. I thought maybe it was a TIA but I lost nothing and everything works. Now no dizziness but am lightheaded due to the severe weight loss. My appitite is slowly returning. I can type but I just cant spell :) any thoughts?