Yesterday, Spencer Pratt threw his Hills cast mates under the bus, today it's his wife.Spence spoke to the NY Post's PopWrap on Tuesday where he admitted that he "barely" has sex with Heidi to prevent her from getting pregnant."I'm not even kidding, my wife OK, I'm gonna get crass here but we're barely having sex because I'm scared that she's gonna have a baby," he says."That's the level our marriage is on right now. I'm not even kidding my wife has me debating cutting off my nuts." Heidi is already on birth control but how easy is it for her to skip a couple pills on purpose in order to get pregnant. "She's not the kind of person who would lie she would just walk away and not answer the question," he says. "So yes, I'm very concerned. Our sex life has dramatically changed recently." Honestly I think this is the wisest decision Spencer has ever made. To read more about how much Spencer doesn't want children right now click here. He reveals that he would rather divorce Heidi than have kids.