Okay ladies (who do anal)

My boyfriend really wants to do me in the ass, now I'm all for pleasuring my partner and trying new things. I've had anal before 1st time I was drunk and didn't feel a thing with my ex the 2nd time was a really bad experience it smelt really bad after it and when I went to the toilet my pooh was gross and sticky and yea so I just wanna know if you ladies have any tips for me