I have been having some acidity problems lately that's been going on for a month or two now. I get constant heart burns too. I seem to not be able to urinate till satisfaction as well as there's always some left behind. I visited the doctor recently and he said I had an infection in my intestine for which i took norflox and aciloc and it got better but started again a few days later after I started smoking again, which I had stopped for the duration of the norflox course. I was wondering if these are the signs of cancer or not.