I have chronic back pain (3 bulging discs with 1 herniated). I was on a pain mgmt plan of hydrocodone 10/325 5-7 daily along with MS - Contin 30mg 2x daily. Doc changed me to oxycodone 10/325 4x daily along with the same dosage of the MS-Contin. The oxycodone has made me really tired and rundown and has also not fully relieved my pain. Any advice on what to try next?