angry with my fiancé

My fiancé has had three other children with his ex-girlfriend. Well now we are having a baby and he thinks he knows EVERYTHING. just because he's seen her go through it before. He acts like I'm stupid and am going to know absolutely nothing about having a child. Like what her pregnancys and baby was like doesn't mean my pregnancy and our baby will be exactly the same. He's like "you really think your gonna be able to breastfeed all the way up to 6 months!? You won't produce enough milk" like how does he know that!? And he told me we can't buy a breast pump because I don't need one because I will be with the baby most of the time. He also said that we don't need a swing or bouncer because the baby won't like it. And we can't get a certain color furniture for the nursery because the baby will get it too dirty. And I told him I didn't want an epidural and he said "you'll never be able to do that, Rachel (his ex) was in too much pain." It's not like he's obsessed with his ex or anything,  he hates the woman and never wanted kids with her (she's a horrible mom, been in and out of jail her whole kids life), he just thinks he knows everything!  HES DRIVING ME INSANE. MY pregnancy AND BABY WILL NOT BE LIKE THE OTHER ONES YOUVE EXPERIENCED, EVERYONE IS DIFFERENT.