Scared stress 1st Tri

Ladies I've been so stressed out going through a divorce and I'm in my first trimester and I'm trying to not stress but it's hard when I lay in bed at night knowing my husbands with another woman. I left him a week ago because of it and I know I don't deserve this but I can't help the stress and depression! This will be our 2nd child and I'm worried that the stress will cause me to miscarry :( I just needed to let it out I am not coping well!!! His such a pathetic asshole who gets off on hurting me emotionally and I can't handle this anymore!!!!