The inner right side of my throat is sore

Patient: For the past few days, the right side of my throat has been sore and it hurts to swallow. It only looks swollen inside my mouth, not on my neck or under my jaw. There are no white spots ant the left side feels fine. What could this be?

Symptoms: I cough a little, it hurts to swallow, the right inside of my throat is swollen.