Recent pregnancy news lost for words

I’m about 6 weeks along, this is my 5th pregnancy but I have 2 boys. My husband initially was happy about it, but the other night he was having a conversation with my eldest, from a previous relationship, and I heard him call him an idiot. My oldest is 13 years old and I told my husband that’s NOT how you speak to a child especially MY child! I didn’t care what the conversation was about you do not insult a child. I asked him to apologize to him he said flat out NO! And decided to sabotage a school project we’ve been working on for days out of rage and stormed off. My son was crying in his room telling me how he doesn’t respect him it broke my heart! He tells me the following morning to get an abortion and get out his house. I just have to gather myself and do I what I need to do for my kids this is just absurd. What would you do?