i read your problem.See, a cheek bite can hurt for days after you actually bit the inside of your cheek.
One way to ease the throbbing pain
of cheek bite is ice. Place a small piece of ice in you mouth , hold ice with your tongue directly against bite wound. It will help relieve any inflamation.
You can take pain reliever like ibuprofen
another way to prevent this by brushing teeth and your tongue,will help to get rid of some germs and bacteria that could cause your cheek bite to get infected.
Rinse thoroughly with antiseptic mouthwash.
Use topical anaesthetics that contain benzocaine
, tetracaine will also help to relieve your pain.
You should also visit your doctor if you think you cheek bite is infected.
Have a nice time... take care