Hi Doctor, I Had A Small Boil Type On My

Hi doctor, i had a small boil type on my mid calf which initially appears to be watery or i dont know weather it was a puss or somekind. i squeezed n it also starting to bleed little bit n then the opening of the boil got expanded since i had to go to office i started covering by appyling plast however whenever change the plast it use to smell if i keep it close to my nose
Since that woond was taking long time to heal, i consulted GP at my place, he conducted sugar test, which appears to be high all though i am not diabetic, he gave me some medicine for the woond to get dry n after consuming the tab it did dry but the i can touch n feel that in the same place looks like the tissue got solid, please help me i have no clue whome to consult