Sore throat. From my sore throat.

My throat is sore from 40days. I. Have taken many medicines from medical stores. With these medicines my food pipe get infected then they gave me Amoxicillin 625mg...and betasol and one syrup. With this my food  pipe was ok and sore throat was also ok but still it was not completely ok. After few days say 4-5 days sore throat was again back. Then from another medical store, they gave me Azithromycin 250mg, numisulide, levocitrizine, betadine gargle. But when i taken 1st dose i feel pain in food pipe and stop using this medicine. Also when i gargle with betadine i feel my sore throat more severe and i stop this also. Then 4-5 days i have not taken any medicine. But my sore throat still there. Then again I start Amoxicillin, potassium and lactic acid baccillus tablet from store and taken one dose at 4pm and 2nd dose on 10pm but now at 12:30 my stomach get infected. Now i have taken acilog 300mg. Pls Dr. Tell me the right way how can i get relieve from my sore throat...