Discomfort and mild pain in throat.

I feel discomfort and mild pain in my right side of throat area. I am confused either it's on jaw or throat or ear. I got my neck ultrasound done but nothing suspicious. I have hypothyroidism. I am feeling this discomfort, slight swelling and mild pain since last few months. It doesn't happen everyday. It happens once or twice in a month but since last week, it's regular. Additionally, it's get affected if I consume icecream Or if I m under super stress condition. I also have sinus problem. I did consult to ent dr, he said your left nasal septum is bend, so this is why you have nose blockage most often but I didn't feel nose blockage this much before. I am extremely worried, what can be the possible cause of my problem. Please advice what step shall I take.