I have two pictures that you can view in my profile (needless to say, they are graphic). I have no idea what is going on, but I have some hard bumps and a bigger, white growth on my anus. I have looked online at condyloma
Those look very much like warts. The perianal warts i had looked similar.
You need to go to a dermatologist for treatment where they will usually use cryotherapy or apply a topical solution to treat them.
You should see your derm/doctor to be sure. But you do not nessacarily have to have anal sex
Posting pictures is discouraged. Most doctors are uncomfortable giving an opinion based on an online photo. The people who post here are not doctors. Our opinion shouldn't be seen as valuable.