I don't know if these symptoms are connected. For the past few weeks I have noticed a sensitive tooth in the upper right side, and noted that I should see my dentist... In the last few days it feels painful when I bite down on anything while eating. I have avoided chewing on that side, and the area now seems agitated and very sore. Not only is it quite irritating but I was struck with a sudden and severe headache earlier today, and again this afternoon. Both times the gum pain seemed at it's worse. I would like to visit my dentist very soon but would like any opinions or advice if anyone has some. Thank you for your time!