What is this in my Anal area? (photo)

I had ad these "Bumps" for a few years. They don't hurt or cause me discomfort all to really be noticed. It doesn't itch unless I have been poking at it and the area is really dry, but even then it's not really an itch that needs to be touched. It doesn't hurt and they are soft to the touch. The size changes and the swelling tends to go down when i shower and comes back later in the day. Or they just vanish for awhile. I don't have problems going to the bathroom, don't get sick or anything.

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