Overly Emotional Fiancé

So we are engaged, set to be married in March but found out we are pregnant and due in June!! Thrilled but STRESSED!! We still live in separate cities, we will both be moving, buying a house, need to find a doctor, looking for additional jobs, postponed wedding and generally just freaking out. But, that being said....

I cannot get this guy to cap his emotions as i have repeatedly asked. He’s

always been in touch with his feelings but I just need him to seriously STFU rn. He’s Stressing, smoking cigs again, occasional huge crying meltdowns, huge fights, he’s always going a million miles an hour, moody, upset about me not being affectionate... he tries to compliment me on my huge boobs but I’m not feeling sexual nor are my boobs here for his enjoyment.

I guess I’m just here to vent. I’ve asked him to stay at his Dad’s occasionally and finding other people to talk to but i just cannot handle his meltdowns when I need to stay calm during the pregnancy. Are there forums he can join? I can barely stand to be around him and I’m only in my first trimester. Help!!!!