I had tonsillectomy over 1 month ago. recently i started feeling body aches & very sore throat with a low grade temperature. could this be strep?

Maybe strep,flu,etc.: Nose and throat symptoms can be from cold viruses, strep throat, allergies, etc... It can be difficult to tell what the cause is. If symptoms only last 1-2 days, it was likely allergies, irritation, or a mild cold. Doctors have rapid 5-minute tests for strep, so a primary care doctor can diagnose strep and start antibiotics "right away", which means within the first 3 days of strep symptoms.