On Thursday I noticed four white lesions on my tongue and I got REALLY scared so I've stopped smoking, at least for the time being. The lesions seem to be slowly fading so I assume that means they're not cancerous but I'm not taking any chances. I'm going to schedule a dental appointment next month for a thorough cancer screening. Have any of you dealt with this? If so, what did you do? Is there a "safe" number of times to smoke per week without getting cancer?