VERY dizzy and feel disoriented, my dr. prescribed ultracet to me...

VERY dizzy and feel disoriented, my dr. prescribed ultracet to me for my chronic neck pain, i have tried everything you can think of to help ease the pain, nothing helped until this med. however it does make me really dizzy, especially noticeable the next morning, i litterally feel like my eyes are crossing a feeling i get when i am extrememly sleepy. this time when i took my ultracet last nite, i also began itching, it seems unlikely that it is an allergic reaction to the medication because i ahve taken before and taken it several times with this not happening. i also noticed i am very grumpy when i take it, i never would have thought it was because of the ultracet until i read it on here! all in all i think this is a good medication for people who have pain and nothing has worked for them....