Is it normal for there to be bleeding, mucus, and a little burning after anal sex? i've only done it twice but this time was kinda rough and no lube

Doctor can examine: Anuses are not designed for in-and-out sex. Just like in any big city, some streets are one-way and some streets are two-way. A vagina is created or evolved to be a two-way street (penis in, baby out). However, the gastrointestinal tract is designed to be one-way, with an opening on each end. Food goes in the mouth, and the brown stuff goes out the butt. (An exception is when one vomits.)