I am facing a problem on my lower lip from last 2 weeks,there is a white translucent bump on my lower lip that comes for 2 days and go away for another 2 days again and again...when it get rupture there is no blood, no pain  and get completely healed on 2nd day.. there is some burning sensation and tingling when start erupting.. it also happened a year ago but only for a single time at same place and dentist gave me an oral paste and it get settle down....but this time it keep getting back on every 3rd day i am smoker and worry about it i also went to a doctor and he said its a mucocele and nothing to worry about it, but this have to remove surgically or by laser treatment. what should i do .. i am worry about cancer... because it get erupted again and again from last 2 weeks ..