i have recently noticed that i have a blue/purple lump right on the entrance of my rectum,i do no have bum sex or anything like that,i always clean down there.it is painful when i go for a number 2 and a little bit when i move,but it does not bleed.i really dont wanna go 2 the doctors n show them please please please help me find out wot it is????i am conserned bout it.