What Causes Sore Throat,soreness In Ears,pain In Left Side Of Torso?

I have the following current symptoms:
Sore throat but mainly hurts on the left hand side of my throat.
Sometimes a sore right ear, sometimes a sore left ear and sometimes both ears are sore.
Mild lower left hand side adominal pain which has progressed to the lower left hand side back and sometimes hurts down the entire left hand side torso.
Sometimes a shooting pain that feels like down the entire middle torso but only when I breathe in deeply sometimes.
I have arthritis and am on methotrexate and naproxen.