Not sure what's happening

Me and my partner have always been slightly adventurous in the bedroom. After my little boy was born I exclusively breastfed for the first 7 weeks, from 3 weeks pp we were having sex almost every night, my partner couldn't keep his hands off me which isn't like him! Sex slowly started to get rougher and rougher, lots of restraining and choking, he was very vocal (something he's never been in the past) we literally were having the best sex we've ever had. Fast forwards to 8 weeks pp and I have to unfortunately stop breastfeeding, losing the large full breasts, leaving behind deflated, empty breasts. Since then sex has taken a huge nose dive. I'm struggling to get things back to how they were I'm feeling super insecure. Not sure if this is the issue or if it's because one of the nights we were having sex we were doing rough anal, he stopped because it hurt, washed and continued vaginally, anyway because it was all juicy down there he slipped out and into my ass again, but this time I really enjoyed it, we both cum and he realises he isn't in the right hole, he can't stop apologising and says he's never doing it again he don't know how it happened he was so into it he lost control, I reassure him constantly that he wasn't doing anything that was hurting or I wanted him to stop but I'm not sure if it's thats the reason we seem to of gone to rare vanilla sex or if its the state of my boobs? Maybe he doesn't find my body attractive anymore? He can't help not finding my new body attractive, I sure as hell don't so I can't blame him. Not sure how to get us back to where we were :(