Kinda upset

So me and my boyfriend is watching a show and a girl is speaking about her infertility... during commercial we started joking like just out of no where & he got personal saying “ you would never be able to have a baby face ass “ he has multiple kids by one women & I have none. I felt away , because it’s not like I won’t be able to have one it will just take longer . & I honestly don’t think I can be with someone who doesn’t understand. Like I’m not gonna be a step parent my whole life if I can’t have kids of my own. LIKE I FEEL SOME WAY HE SAID THAT. He Doesn’t understand why. I feel like I’m not good enough , I’m so over it