Skin Turning Black And Blisters On Skin Is My Burn 3rd Degree?

Is my burn 3rd degree? - skin turning black and blisters on skin

I had to burn a small (about the size of a cent) at the hip by about 5 days. The itsself painful burning then it is virtually painless. Initially turned kind of black and blisters. This layer of skin came the next day revealed a white, but not the cat bed. There is not much pain at all, but I fear it may 3rd Graders and require medical treatment. I'm religious cleansing and saw no signs of infection. I do not want to consult a doctor.

Anyone who has experience with such things?
Tips for caring for him.
Is it absolutely necessary that I go to the doctor?

Thank you in advance for your help.