Hi, my doctor wanted me to take 2- oxy every 4 hours for at least the first 2-weeks. Maybe you need to adjust your times especially at night. I found it wasn't working for me, it made me nauseous and out of it so he switch me to hydromorphone. That was like day and night for me. I only needed one every 4hours and 2 every 4hours at night. I'm 7-weeks out and now only need tylenol and ibuprofen a couple times a day. I just started sleeping in bed. I slept for 5 hours one night this week. Before that I slept in the recliner getting up and walking every 2-3 hours. Remember to stay hydrated and stay on a constipation regime while on the narcs. Magnesium at night helps with the cramps and the constipation. My doctor had me use a special ice pack. The gel ice pack lasted 3-hours and started warming up on hour 4 so I would change it every 4hours. You need some warmth for circulation. Good luck!!