question: I m a smokeless tobacco user of 11+ years, a can lasts me four to five days. My lower gumline, in front, doesn t show signs of the white-puss cancer pics I see on the internet, but I have noticed that my gum has an ache to it. My last dentist visit, about five months ago, reflected no signs of cancer. I do have another appointment coming up just for a cleaning and reevaluation. My question is really what are the earlier signs of cancer? My gums are pink, but do have a dark discoloration to them - but I can t tell if that s just because light isn t reflected properly. I ve also noticed a dull ache in my chin , right past the bone, what could that be? Thank you for your time.