Divorce while pregnant

I am 15 weeks pregnant and I am getting a divorce. I am so so scared. I've been with my husband for 7 years and I found out he had several affairs, and he has been extremely emotionally abusive. I really do not know how I am going to do this as I have 2 other children and he was the main income. I am just so sad. I keep thinking about the delivery and how it was supposed to be happy but now I am going to be alone. I will be glad to move on and be happy again, but I also keep thinking of the memories.