Inside of my cheeks are raised and sore?

Linea alba? A raised white line inside your mouth at the level where your teeth meet is due to sucking or biting your cheeks. Its called a linea alba (white line). Benign tumors appear as bumps inside your mouth that may hurt if you accidentally bite them. See your doctor, your dentist, an ear, nose & throat specialist (ENT) or an oral surgeon. Remember a picture is worth 1000 words.
Oral surgeon. If this has been a persistent problem, see an oral surgeon for diagnosis.