Fighting constantly

My husband is constantly upset over something lately and I'm completely exhausted with arguing. I feel physically and emotionally terrible and like I'm doing this pregnancy alone.

I'm having awful nightmares all night every night we fight. I just don't know how I'm going to get through this season.

I can't do another phase of constant conflict. I just can't. I'm overwhelmed and scared.

Is it normal for the man to become super irritable and critical and nit picky as baby gets closer to coming?