Hello,
Delayed wound healing can occur in vitamin C and vit K deficiency,diabetes,p-rotein deficiency, immunocompromised states and if the person is taking corticosteroids or immunosuppressants.
Take some vitamic C supplements and eat lots of citrus fruits. Also get your fasting blood sugar levels done. If the symptoms persist then please consult a physician. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
have you tried making sure you consistantly use antibiotic ointment, keep the area clean and dry?
You may need to see your doctor about antibiotics.