I'm a 19 year old male and I recently noticed a dark bump on my anus, which may or may not have a white dot on it (Hard to tell). Prior to noticing this the last few weeks i've had trouble with bowel movements being either hard to get out/painful or being similar to diarrhea. The lump doesn't seem to hurt at all and i barely notice it unless wiping. Sometimes after wiping however, it can be very tender and it can hurt to walk/sit. Very worried as to what this might be. Any help is appreciated.