Thanks for your query.Based on the facts that you have posted it appears that you have developed chronic infection of the glans
and foreskin.( Ballano Posthatitis.)
If you have not tested your blood sugar levels to rule out diabetes
get it checked now to rule out the same as this is common in patients with Diabetes.
Please consult qualified Urologist
for clinical Examination and advice.
You may need to get circumcised to resolve your problem permanently.