This is Dr Basu, experienced Internal Medicine Specialist.
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Probably a viral infection --common at this time.
Do you feel any swollen glands at the painfyl area?
Still common with viral infection.
However if the fever gets higher and does not come down to normal in next 3 days, then you will need another clinical evaluation.
Bacterial infection should be suspected then and antibiotic course will be required in that case.
So far not concerning .
The shoulder pain is expected from muscle inflammation related to viral infection.
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