Is it really necessary to go to a doctor for treatment or can it be self cured with over the counter medicines?

Dr. can check throat: New throat pain can be from a strep throat infection (antibiotics are needed), a cold, influenza (Tamiflu sometimes used), or from some other less likely cause such as allergies or irritants. Usually, a person sees a doctor if a sore throat is bothersome, recurrent, or doesn't go away quickly. Without seeing a doctor, it's hard to guess whether or not antibacterials or antivirals are needed.