any suggestion is welcome

I have recently changed jobs from a nursing supervisor to an icu stepdown floor nurse at a different hopsital. i like my job. i loved my previous job but there had to b a change made and i was the dispensible one. my question is...i had to stop working night shift because i quit sleeping and felt horrible. i tried medications but they made me feel "drunk" all the time. at my new job i have to work days and nights. i was scheduled 4 nights in a row. i worked 2 with no problem other than i didnt sleep for 2 days and on the 3rd i had to call in sick because i was an emotional mess, hadnt slept and felt totally unsafe to perform my duties. i never call in sick and have huge guilt about this and know that i cannot work nights. i feel that i am being a terrible person and just complaining but i am physically ill and mentally a wreck. what can i do?
Your body cannot handle working nights. It's that simple. You are well on your way to being physically ill .....from trying to force your self into a circadian rhythm that ...YOU CANNOT HANDLE! (And that's okay)Please, get your doctor to examine you and document your physical and mental issues with night shift .Take some time off while you find a day job, or your facility realizes they would rather have you on days, than lose you .Hats off to people that can handle nights. I never could and never felt any guilt about it.

Have you tried Nuvigil? I have a few people in my department who use it only on work days and they say it is great. I have not taken it myself.