I have this bump around the anus entrance area. It's not painful but it's been there for a few months now. It was quiet small at first but I touch it and it seems to be bigger in size. It doesn't hurt, I don't bleed or anything like that. I noticed that it gets bigger only when after letting out my waste but any other time I can't see feel it. I'm getting concerned. I as I read a few other posts, I thought it could be a blister as someone described it but it's been there for quite some time now and hasn't gotten any better. To be honest I don't feel comfortable going to the doctor and bending over... because as I mentioned before, you can barely feel it any other time.