AITAH for banning my husband from the delivery room over a joke?

So, I was fortunate enough to marry a jokester (LOL). My husband Mike likes to joke about any and everything. His a sense of dark humor, like really really dark humor. And at some point he started making me the topic of his joke til I put my foot down snd told him to stop since he joke were...wel, hurtful!

I'm 8 months pregnant. We're expecting a baby together and we're beyond excited. So far there had been no issues except for what happened last week while we were visiting my inlaws.

We were sitting at dinner table and my MIL started talking about the baby. Mike got hyped up as usual then he looked at me and with the most serious face he said "Well, the baby better look like me or else we're getting a divorce in the dilvery room". I was absolutely flabbergasted. At first I couldn't believe that he actually said what he said. His family started laughing that's when he said "Relax, it's just a joke honey". I was fuming I feel so humiliated and disrespected I got up from my chair and told him that he would not be allowed to be in the delivery room after what he said. The smirk on his face disappeard instantly and he said that it was just a joke. I decided to go home cause I didn't feel well after the fight. I refused to talk to him and he started blaming me for my reaction saying I overreacted and that I was being overdramatic to make such decision over a joke. We had another fight at home and we exchanged some words then his mom called saying I should stop being so sensitive, and that her son was just telling a joke, and that I need to get over myself instead of punishing her son like that. She even said that I should let her son into the delivery room if I "have nothing to hide" . this caused me to get more upset. I'd refused to have any conversstions with him after that and I feel hurt because I'd told him before I didn't like how he made me the center of his jokes.

Was I being sensitive over this?