If the sore throat is severe, or if you also have stomach pain, a red rash, fever, or white patches in the back of your throat, call your doctor right away. Treat less severe symptoms with over-the-counter cold and flu medicines. Do not give cough and cold medicines to children under five years old. These include decongestants, antihistamines and analgesics, such as acetaminophen. If the lumps don’t shrink within two weeks, or if one becomes very large and tender, see your doctor as soon as possible.