Help!

So my boyfriend wants to do anal, and I’ve never had a great experience with it (my ex made me bleed from just kinda doing it out of no where) so like I don’t know if since it’s a new relationship I should be more open to it or if I should just go with how I feel. He seems very disappointed that I don’t want to do it but like what if something came out when he put it in??? I’d be so embarrassed..

Honestly I don’t see what’s so great about it... anyone with good experiences/tips please comment