Becoming Independent single mom with 3 kids after husband cheated

So I'm 39 weeks pregnant with our third girl, my husband has been cheating however I'm no longer working due to preeclampsia in this pregnancy so I'm kind of nervous to leave him and so close to having this baby, without the financial support. I've been with him for 9 years and he has cheated previously however I've tried to keep our family together for the sake of my girls who are attached to him, reason for me trying to keep the relationship. However it's taking a toll on me having to hide my feelings and emotions towards the situation so my two girl don't get affected by it. My girls are 6 and 2. I love him but I don't think it's worth it sticking it out and I'm having a hard time like I said because both of my girls are attached to him and I would hate to tear their relationship apart. FYI* He does take care of his girls and is a great father to them but as for us it seriously sucks.... any advice and or opinion helps.....