On the inside of my cheek on the bottom near my teeth it hurts, feels like a cut or bruise but its not. what is it & what can i do? hurts when i touch

Needs to be seen: Unfortunately, we don't have enough information to go on in order to know what it is and what can be done about it. Merely giving you a list of possibilities won't be helpful at all. Please see your own dentist as soon as possible for a definitive diagnosis and treatment if and as necessary.

Best guess: If you hadn't had all of your wisdom teeth removed, i would have them checked. Especially, if the pain is coming from your furthest back tooth. I am guessing that swollen gums around your wisdom tooth could be the source of your pain. Get a check up. If I am correct then the wisdom tooth should be extracted.