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You may do salt water gargling. You need to get examined to rule out tonsillar infection. Mostly it is a viral pharyngitis
which should explain the body pain
as well. It should subside within 7 days. Take plenty of water and fruits for Vitamin C
. You may require antibiotics since you have laryngitis
, but for now steam inhalation will provide relief. kindly visit your ENT Doctor for specific treatment based on your problems.