Hi, Not a medical expert, but I think that
contrary to judge-y comments, anal sex can be pleasurable and safe. Tons of people, gay and straight, enjoy it! If you have a contrary experience with lasting symptoms, try to find a gay-friendly doctor to speak to. If finding an open-minded doc is not possible, work up a little more courage and maybe go see a different doc for a onetime opinion. For anal, I find that knowledge, relaxation, LUBE, and protection is key!