| | Re: White bump on roof of mouth
recurring pus is almost certainly NOT consistent with cancer as you describe here. please immediately let out a long sigh of relief on this one! however, you do need to go to the doctor or dentist to clear up the chronic (almost certainly bacterial) infection you have acquired.
since you did not mention gagging while getting rid of the pus, i assume it is on the true hard palate. that would probably be best treated by a dentist. if it is further back than the hard palate, or off to one of the sides, i'd go to a doctor.
it is a low grade but recurrent chronic condition very unlikely to clear itself up by now, and could get worse and harder to treat. this is a smart bug you have that is outfoxing your immune system.
if it is to one of the sides and is definately on the hard palate, this is probably a chronic tooth abcess and you will be tested to identify which tooth is the culprit. that will mean a root canal if you wish to save the tooth or an extraction if you don't. the wound will be irrigated and antibiotics prescribed. on the other hand, if it is dead center on the roof of the mouth, it could be a couple of things, an infected tooth and possible sinus involvement at this point.
so relax but i wouldn't let it slide. be sure to finish every last pill if they are prescribed -- that's important. good luck and you'll be better soon!