Welcome to HCM,
You are known case of Diabetes
type II,and as you told your blood sugar is controlled, your age is only 22 years, so it is important to know was it diagnosed with C peptide level that you have Type II. It is also important to know do you take oral drugs or insulin to control blood glucose level.At the age of 15 Type I is more likely.
Burning all over body and hot feet may indicate some kind of neuropathy,but we need to think about other causes like Hyperthyroidism
and burning feet syndrome, Allergic reactions like Urticaria
You have been give alkalizer which is for urinary burning then please check urine routine and microscopic test if there is infection treat it accordingly.
Neuropathy may be confirmed by getting Nerve conduction studies.You can get serum B12 level also to know deficiency, any drug which you are taking, if by chance alcohol is there please stop it completely.
If Neuropathy is there it can be treated with drugs if B12 is low it can be supplemented.
If allergy is detected then antihistamines would be required,and removal of cause if possible.
Symptomatic relief may be obtained by Gabapentin