I do! My spine has crumbled (was crush fractured when my father threw me down the stairs at the age of five though not diagnosed until I was 23!). Sciatica, spondylosis, strained sacro illiac joint, nerve pain … Oh, and migraines! And several other conditions that were dismissed as being in my mind - including the pain of a cyst on my spleen (probably from several viruses I had during my teens) for many years, causing much pain and vomiting, and the diabetes for 10 years before I was diagnosed despite having all the symptoms including DKA (I know that now, looking back!) and being dismissed as an alcoholic (smell of ketones) even while I was in hospital with the cyst for 6 years! Oh, and I have sleep apnoea! Triple whammy!
I believe it is a well known fact that pain can affect blood sugar levels and mood. I just have to celebrate when I get the occassional good reading and sigh and inject more insulin when my sugar levels swing wildly! As you say, a sense of humour is a must for a diabetic!
I have been given Pregabalin which has helped me sleep - does make me rather groggy, but when the pain gets bad and I know that there is not much on the next day I will take it. It is good for pain, even though it is an anti-epileptic drug.