Yesterday i had a burning sensation back of my throat, today the burning is gone one side is sore when i swallow! no white patches or anything, i just feel there is phlegm what can i do? and why i constantly like 4* a year i have this throat issue?

It appears that you're fighting off a viral upper respiratory tract infection. 4 episodes a year is an excessive amount of these infections. Is your home or work environment too dry? Perhaps you'd have better resistance by taking adequate doses of vitamin C daily,washing your hands often and drinking plenty of fluids daily. An ENT specialist could evaluate and advise you further.