r there any BL with mpreg

On one hand I’m going to judge your tastes on the other hand just read like any other omegaverse like practically every other one has mpregos [big_sigh_of_dissappintment.jpg] idk some animal characteristics ones also have that sometimes ( ´_ゝ`)

If you're willing to go down the A/B/O rabbit hole then ohhh boy you're in luck! There's a ton of content out there in novel, manga, visual novel, and even in anime format around the world! I don't have any recommendations, but if you look in the right places (magazine publishers, circles, genre sorting on logging websites, etc.) then you'll find some stuff that may pique your interests.