Hi there!
Yes your Diabetes specialist is absolutely right in that Ibuprofen and other NSAIDs are not recommended in Diabetics.
Your symptoms since they're on 1 side is most likely to arise from one of your
Spinal nerve roots impinged by a part of your Spine, commonly known as a
slipped disc.
It is mostly seen in people above 50yrs of age and is fairly common. The problem is that the pain is worse and more difficult to control in Diabetics.
Start with an Xray of the LumboSacral spine - of it shows anything then you can consult a Physiotherapist and take appropriate measures.
If Xray doesn't pick up anything, MRI of the
Spinal cord helps.
For the pain , if not controlled by Tylenol -
Pregabalin 75 mg twice a day for the first 2 weeks and then once a day at night should help. Needs a week to start showing effects. This can cause
drowsiness and so i would advice you to avoid driving and operating heavy machinery for the first few days.
If it doesnt work - small doses of Amitryptiline or Nortrytilline is helpful.
Avoid lifting heavy weights.
Take care. Hopefully this helps.