Pregnant and Lonely

I’m currently pregnant with baby #3. Me and my husband have a soon to be 10 year old son and a soon to be 4 year old daughter. He’s not into this pregnancy and blames himself for getting me pregnant. He’s saying we’re not ready, and this shouldn’t have happened. I can’t even talk to him about the baby w/o him getting upset. I’m a pregnant SAHM who is very lonely. This makes me just want to do it all by myself... I’m so over my husband having pity parties about everything and playing the victim.