I got to the point of having a glass of alcohol, one I liked before going to bed, helps you relax enough I think to get to sleep.
I think also when you get into the habit of not sleeping because of pain, and or anxiety it becomes a habit, a nasty habit, and it does take some time to overcome.
Sarah - darling don't worry about addicition, you need those pain killers for now, but you will know for sure if you are addicted when you stop taking them.
I had the most horrid problem after my cancer hysterectomy, stomach cramps, vomiting, and generally feeling terrible, four hours after being discharged from hospital, back to the hospital and answer was addiction, after 9 days crazy but true.
Now they know about it, they are very careful with my painkillers, but i was very relaxed about it, I knew what I had to do if the same problem happened again, it didn't.
I sometimes wonder if it was the mix of hysterectomy and traumatic change of life, and the painkillers combined that resulted in addiction.
Young Dr got his pen out and wrote for me 1 x tablet every four hrs, for a week, then 1 x 4 half hrs for a week, then 1 x 5 hrs for a week, and so on, you get the idea, after a number of weeks, and getting out to 8 hours apart, I though what if I don't take the next one, no problems, addiction problem solved.