Suggest Remedy For Swollen, Painful Tonsils With Sore Jaw

Hello my name is dontae jackson.Yesterday afternoon my mouth started hurting, And today is worst. At first I figured my jaw/mouth was sore due to my kickboxing training. Ive come to the conclusion that my tonsils are swollen and very painful. Only on the left side of my mouth. No pain what so ever on the right side of my mouth. I have no problem swallowing. Chewing is a big issue only on the left side of my mouth. Also I cannot open my mouth completely wide. Its not really the pain stopping me. Its feels the same as the day after lifting weights your muscles are tight and stiff with little mobility.What's going on??