Hello,
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Your symptoms could be either due to raised uncontrolled blood sugar or allergic reaction.There is a possibility that blood sugar may be fluctuating. You need to monitor your blood glucose levels closely.
Another possibility is of a benign type of viral syndrome.These types of viral syndromes typically last from as little as 3 days up to sometimes 4 to 6 weeks. I would advise that you support the body with good hydration, adequate sleep, a well-balanced diet and a moderate exercise regimen.
In a diabetic patient under treatment, usually the goal of diabetes management is to strive to keep fasting blood sugars under 140 mg/dL and preferably closer to the 70 to 120 mg/dL range. Doing some lifestyle changes will help you further like-
1.Reduce saturated fat intake.
2.Maintain good body composition .
3.Increase dietary fiber .
4.Do some exercise .Exercise is actually good for the immune system which is why I suggest it here. In addition you can supplement diet with some Vitamin C - 1000 mg daily and consider drinking some immune boost type of tea such as Echinacea after discussing with your treating Physician.
Get your Hemoglobin A1c levels also done.Kindly visit a Physician for clinical examination as that would be quite helpful in giving precise diagnosis.
Take care!