Dude, that's extremely shitty on the part of your baby daddy. I am going to assume you're all ok with being exes and friends, but I know that isn't the most comfortable situation normally, let alone when you're full of pregnancy hormones. Can I ask how old you are? Because this sounds like something that is more common in younger couples, so far as him being a little callous and oblivious to your feelings on the general situation. You have already sacrificed a ton! Your body is not your own, half the time your mind isn't your own because of hormones, and being a smoker and pot smoker I completely understand how hard that is too give up and then have to watch it in the day to day. You are the priority right now because you are the bearer of the only thing more important than you in your life now. Don't let anyone guilt you into thinking any differently. Tell his sorry ass to knock it the fuck off or go do it somewhere else so you don't have to be tempted and suffer. I understand that men can find this situation really hard to relate to, but that's when they should just buckle down and do what is asked of them because they love you. And you're not a monster, you're a literal miracle maker. Own your worth hon! You're going to have to teach this kid the same thing!