i discovered a smallish (about 1.5 cm) lump on my anus, it is not painful, but is uncomfortable when i sit down. It is darkly coloured and when i touch or squeeze it gently, the fluid and small lumps inside it move about. Ive had it just over a week now and it hasnt changed. It is worrying me, should i see a doctor? Im 17 and male in good health. I do sit down for lng periods of time after work, for several hours non stop at my computer, if this is anything to do with it.
Please help