Red swollen tonsils, white streaks, one red/purple ulcer right behind my left tonsil, does not really hurt to bad, only burns and is scratchy, help me

Doctor can evaluate: New throat soreness or spots can be from a strep throat infection (antibiotics needed), a cold or mild flu (antibiotics are not used), or from some other cause such as allergies or irritants. Usually, a person sees the doctor if the sore throat is bothersome, recurrent, or doesn't go away in a day or two (mainly to check for strep throat). Throat lozenges can decrease throat pain, for 1-2 days.