My wife is on her 8th day of chantix, and there is a sore on the roof of her mouth about 1 inch in length and about 1/4 wide, raised, about 1/8 inch off the surface of her soft pallate. We can not get hold of her doctor, and we would like to know if she should stop taking the medication until Monday, when we can get hold of her primary care phyisician, or should we seek emergency room consultation?