Divorce while prego?

Has anyone experienced going through a divorce while pregnant? I'm 17 weeks and my husband told me today, for about the 15th time in the last year, that he should have never married me and wants a divorce. Usually I fight to keep our marriage together but this time I'm done. I can only hear it so many times before I can't anymore. I'm not sad about him, because I pretty much hate him at this moment. I'm sad for my son and baby girl due in Oct. they deserve better, and truthfully, the thought of not seeing my kids everyday is what breaks my heart. Any advice from someone who has been in a similar circumstance?