Get a throat examination to rule out chronic tonsillitis
. Get a Throat swab sent for Culture and Antibiotic Sensitivity Testing to rule out a resistant form of staphylococcus aureus
, (eg. MRSA - Methicillin Resistant Staphylococcus Aureus). 'Aureus' means golden yellow, hence the yellow patches. Assuming that you are an adult, Klavox 625 mg twice a day will normally suffice against staphylococcus aureus. You may use a medicated gargle regularly, in addition.