Hello, I went through your query, looks like you got cold ( upper respiratory tract infection) . Common cause include viral,( due to weather change) may be super imposed bacterial infection. For viral all you need to do is, avoid cold food or drinks, drink some hot tea, salt water(warm) gargling thrice a day, may need NSAIDS and antihistamines to control pain and allergy, low temperature in Ac room should be avoided . For bacterial infections you need to take antibiotics too. Please consult a physician for prescription.