Hi, 
You are saying to be a diabetic for long time. Usually, diabetes is often associated with neuropathy (damages to the nerves) together with lack in 
vitamins and minerals (especially those helpful for the well-function of muscles and bones). 
In your case, if I was your caring doctor would advise to : 
- take 
multivitamin supplements (containing vit B complex,D, calcium, 
magnesium,etc.)
- check for possible brain accidents or/and peripheral nerves (
paralysis). 
- if nothing of concern with your brain or/and nerves, apart taking pain-killers; I'd suggest to do light-to-moderate exercises to help your muscles and bones move and relieve pain too. 
Shortness of breathe might be related to: 
- muscle spasms
- possible 
heart disease as a complication of diabetes
- lung/respiratory problems
Further evaluation with EKG, chest X-ray is needed to exclude such problems. 
Hope it helped!
Dr.Alba