Anal sex ideas and stories please

So my husband really wants to try anal sex and I would like it to but I don’t know how to go about it. We’ve tried a little and it’s just been painful even with lube. I’m also not sure how to get into it. I enjoy him rubbing the outside and gently using a finger but then I find it’s hard to relax and actually have him inside me. I am pregnant and I think anal would make us both stress out less too because we have been super gentle and careful with vaginal sex because I had some bleeding. I would love any tips but also any stories are things that you really enjoy. ThNks!