Wounds that do not heal in diabetes are mostly related to uncontrolled diabetes
, nerve damage
occuring in long time diabetics (diabetic neuropathy
) and diabetics with poor blood flow to the foot due to blockages in the blood vessels.
It is essential for you to understand that avoiding seeing a doctor does not mean that you can escape the disease. A wound like you described could easily become infected and rapidly spread to the whole body.
Coming to the question of amputation
or not that , depends on where exactly the wound is, what is the circulation to that tissue, how is the surrounding area, what is the infection in the wound. Only an expert surgical consultation done in person can help make such decisions. You should discuss options with your treating doctor and decide accordingly.
Hope this helps.