Advice pain releif for OA in fingers with Diabetes + high BP

Hi
ive recently been diagnosed with Diabetes type 2 and high BP am on Metformin, BP Tablets and Antidepressants, i was diagnosed with OA in my fingers about 5 years ago by X-Ray, i was taking Diclofenic tablets and paracetamol to manage the pain (also ibuprofen gell on my fingers at times which ive now been told not to use) but now my GP has told me to stop the Dicolfenic and just take paracetamol but this doesnt help at all, im having a liver scan in 2 weeks as blood tests show i have sluggish liver function,

ive been trying to manage the pain with heat (microwavable mit ect) as the paracetamol doesnt help, the 3rd finger on my right hand is the worst affected, also the bump at the base of my thumb and little fingers flair up occasionally but are stiff and painful to move most of the time, my right hand has also started going very cold at times when my left hand is still warm.

my GP doesnt seem very interesseted does any one have any advice for me? also wondering if anyone else has had the steroid injection in their fingers?

Thanks In a Advance
Bevmum