I had two cavities filled this morning. My dentist gave me two novacaine shots toward the bottom-back right section of my mouth. The first one hurt terribly. The second didn't hurt at all until he got deeper into my cheek. I felt a sharp pain. The whole appointment took about an hour. When it was done, I still couldn't feel the right side of my face. Once the novocaine wore off at home, I started feeling pain in my jaw and underneath the right side of my tongue. I held an ice pack to my face for a bit, then as I was getting ready to brush my teeth, I noticed discoloration in my right cheek that looked like the beginning to bruises. Is this normal? Is it something to worry about? I'm kind of a hypochondriac so I'd rather know sooner than later the odds of a major injury. Thank you.