Thanks for reaching out.
Since your reports are more or less vague and may indicate an infective cause of the disease, there may be other causes, including dengue. But till now this doesn't seem to be a possibility much. Still your doctor is right to order tests for tuesday to see whether you have improved by taking the medications.
Don't worry about dengue because it will automatically be noticed when further tests are done. And antibiotics are a part of the treatment for the same.
Take care.
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