Thinking... Divorce 😢

I've been married for almost 7 years, we have a 6 year old together and another on the way (both unplanned) that he doesn't want. He goes out with another girl and spends quite a bit of time with her, I've told him my feelings but he doesn't seem to care anymore. I feel like he's cheating on me emotionally. Has anyone dealt with a divorce with kids that may have been rocky and how did you do? I'm so frustrated, I doubt he'd be open to counselling as I've brought it up a few times throughout our marriage. I'd like to get joint custody but have my daughter live with me