Ok,I have been quit for 135 days now, and, for the last few weeks, I have noticed my lower gums(where my dip used to be) a reddish color around my teeth. I thought maybe the color was just coming back, but it is a lot "more red" than the rest of my gums. Seems to be kinda sensitive too. Went to dentist for a cleaning in Sept. All was ok. Is this something I should be concerned about???