It is a little confusing, as most story's with male pregnancy are omegavernse made up biology, but this is a condition from real lofe altough even if a male happend to have this, in most cases the utures and womb dont fully develop and dissapear with testoron treatment. And even if it develops with no problems it is almost certien to be invertile.
Hope this helps, tough most authors dont use these reference it is nice reading this story with some proper research ٩(๑❛ᴗ❛๑)۶

I'm only at the beginig but I'm just so confused about mpreg because it doesn't seem like omegaverse ┗( T﹏T )┛