Hi welcome to Health care magic forum. You have got a strep throat, leaving behind a weak tissues, vulnerable to infections. so you had infection again, that is minor, when resistance comes down you had strep throat again. any how nothing to worry, it is common to have a throat infection frequently. I advise you to consult an E.N.T surgeon, for diagnosis and treatment. You may need to get the culture and sensitivity of the throat swab done for confarmation. for recurrant sore throat, i practice chemical cautarization with silver nitrate, with good results.
Besides i advise you some diet recommendations,as avoid taking ice water, ice cream, cool drinks, fruits, juices,and other substances to which you are allergic. Wishing for a quick recovery, and thanks for calling.