Struggling with Disclosure at New Job

hey everyone, feeling kinda down and unsure of what to do. just started a new job at a very small but successful business, i am the 4th employee there and am struggling with the people i work with. ive only had 2 days of work and i haven’t disclosed that im autistic, yet 2 different autism jokes/comments have been made by 2 separate people already and they feel very judgey & super worried about what other people are doing AKA problematic af. conversation dynamic is very informal and im not sure if it’s a good approach to disclose or not. i feel like if i do mention it as a “please be mindful of what u say” kind of thing, they’re just going to talk about me behind my back like they do about everyone else already so?? but also i can’t just continue to nervous laugh uncomfortably. guess since there’s not too many of us they like to keep up drama to make it interesting.