Sex is meant to be dirty. Do douche obviously but beyond that stop worrying about it. I used to really struggle to enjoy anal because the closer I got to climax, the more anxious I would get about being totally clean when my top (any, not monogamous) pulled out and I'd get ego-dystonic emotional recoil at the moment of orgasm and get like, blue-balls -type sensation and badly dampened climax. It also lessened the intensity of all the sex I had because I wanted to keep it slower and less vigorous. I'm nearly 30 now and as part of growing past my general fear of failure with maturity (that had made me way too avoidant growing up & resulted in me skimming over the surface of my own life dissociated, without becoming immersed in being part of the world, up til like 25) I found myself accepting the fact I'm a filthy faggot who does buttsex and that it's quite possible a life that is overall full of personal fulfillment for me may necessitate a few accidents along the way, I don't have to be unrealistically anime-uke perfect to allow myself to feel sensual without fear (fear caused by me putting myself on trial constantly like I'm not suitably justified in my existence or manner), and as a result the past few years I have had a lot of some of the most fulfilling sexual experiences of my life, with very little shitdick problems in practice after all my paranoia. All my worrying did is made me have less sex and not as good sex. Only now am I able to let go of my thoughts the moment they arise and blliss out, almost like meditation, and allow myself to fully feel myself.