He wants a baby now

My husband and I have an almost 5 year old. Recently we had a random argument and he mentioned that he wanted another child and that I don’t want to give him another one. He even said that he would leave / divorced if I didn’t give him another child. We had our daughter when we were young ! I was 17 years old on our first child we are currently 21 & 23 and I want to wait until next year bc I’m in the middle of “weight loss journey” and he wants a child now.

I don’t know what to do. If now or to wait next year. What’s y’all opinion if it was your situation?

Update: we’re going for the baby ❤️ I’ll get back on track after our blessing arrives!