Hello and Welcome to 'Ask A Doctor' service. I have reviewed your query and here is my advice.
As per your complain it seems that you are suffering from upper
respiratory tract infection, and the symptoms of cough,
sore throat, body ache/ joint ache is due to it..
As it is a viral infection it will resolve once the virus will complete its cycle in human body..
As of now you can start with supportive treatment to relieve the symptoms like:
-Gargle with a warm saline solution that is by mixing 1 teaspoon salt in a glass of water and warm it to make a luke warm solution..-Take a combination of decongestant like
Phenylephrine, mucolytic like Ambroxol and anti allergic levocetrizine and another combination of
Acetaminophen and Ibuprofen..-Take cough expectorant containing Gueifenesin and cough suppressant containing
Dextromethorphan.-Chew a Vitamin C pellet daily..-Do steam inhalations..-Avoid spicy and chilled foods.. -Sip on warm water throughout the day..-Do warm compresses over chest..
Hopefully the symptoms will resolve within a week and if it worsen consult a General Physician and get evaluated..
Hope I have answered your query. Let me know if I can assist you further.