Anal sex

I am 26 with 2 kids and I have never tried anal sex. My boyfriend has asked me if I was interested in trying it but I'm very hesitant since I've never tried it before. I am sort of freaky when it comes to the bedroom and I like to try new positions/things etc. I am just curious on other women's experiences with anal sex and what it is like for you. I personally think it would feel like I am crapping repeatedly which doesn't sound that good to me. Please feel free to share your stories/personal opinion. I'd really like to know more about it, like does it smell like crap during anal or could you accidentally poop? This sounds hilarious lol but I honestly wouldn't have a clue how to do it or what to do. Any feedback would be appreciated! Thanks!🍑💩