A PCP needs to examine and see whether you have swollen tonsils, redness at the back of the throat, post nasal drip etc. Pharyngitis, tonsillitis or basically an
upper respiratory infection can be due to several pathogens. You should consult your doctor for antibiotics. Also an X-ray of the chest will be needed. Meanwhile you can take an OTC anti-inflammatory and do warm saline gargles 2-3 times a day. Drinking warm lemonade, hot clear soups and herbal tea may soothe the throat considerably.