Hi, about a week and a half ago i noticed a small bump on my perineum ,under my skin near my anus , while showering. Not really any pain at all. Now it is slightly larger in size, only discomfortable if/when pressure is applied. It feels like a small mass of fat; semi firm. It is about the size of a small bean. I am very worried about this as colon cancer runs in my family. I am only 23, but still very worried. What should I do from here?