A.H.
This doesn't sound like a healthy relationship to me at all. If you don't mind me asking, why did he want you to get pregnant right away? If he has two boys, he should know that a pregnant woman is going to have mood swings. What happened to the mother of his first two children? Did he break up with her too? I would evaluate this relationship and see if it's worth saving to you. Just from the information in this request, he sounds like he is controlling and may not be the right guy for you. If you think he is, I would just have an honest conversation with him and ask him to be patient. After all, you won't be pregnant forever. Ask him to point out (in a nice way) when he thinks you are having an attitude and help you work it out or just remove yourself from the situation. I don't know the whole story, but be completely honest with yourself to see if this is a situation you want to continue to be in. If not, get out now before it gets worse.