arguements and anger

Melissa • Mummy to an Angel baby Alfie born sleeping 27.11.16 👼🏼💙
Hey
So my boyfriend caused a massive row tonight, again. He always does it, but once he has, he just acts like it's not his fault, and I am am so infuriated I'm literally boiling with rage 😡😡
It's always over stupid things but I just can't deal with this stress during pregnancy! The rows, the shouting at each other, the nasty words, then the next day he acts like nothing has happened whilst iv sat up all night crying on the sofa and had no sleep, mostly sitting seething with things going Round and round in my head. I told him I wouldn't have another stressful pregnancy, he did this a lot last time, and last time we lost our baby, not because of stress though, he had a disorder. 
My nerves are through the roof with worry.
Tonight it was over something so stupid that we said this we were going to go out tonight for dinner but it got to teatime and I am just so damn tired at the moment so I didn't have the energy .... so he took a huge huff and stormed upstairs shouting then came down calling me lazy and it all snowballed from there till we were screaming at each other
How do I manage my stress levels