This is what I’m talking about when it comes to pregnant bondage!  Choke her up with a nice tight leather collar and force her to pee in a tin.   Then make her give herself a pregnancy test by lapping her pee like a dog.  Move on to forcefully inserting your cock in her slut mouth fucking her face hard till she gags.  If she resists, spank her ass raw.  Then fill her pussy with your hard cock,  repeat spanking her ass raw as necessary.