Sara, I'm very sorry to hear all these things. I live in FL too. I don't think we live in the same city though because I kind of know the Muslim community and physician community here. I wish there was a way to get in touch and meet up. I'm moving up North though on April 1st.
I'm sure you married your husband when the relationship was totally different. Before kids everything is different. You married the man you loved and you couldn't predict the future. I'm sure your husband loved you too and still does in some ways but doesn't see the good parts of the marriage at this time.
I do hope so much we all find new spouses in the future who give us everything we wished for so badly from our current spouses. Or I wish our current spouses would work to fix it with us. I still feel like there's no worse feeling in the world than to love someone so much, and work so hard to save the relationship, and get nothing in return except abandonment and betrayal.
If possible it would be great if you could take some time off work or reduce your workload temporarily to give yourself a break. I hope you can meet or know some women going through the same thing to support each other. I hope your kids will someday know how much you tried to make this work for them. They will always appreciate what you did. I'm sure they'll love you even more knowing how hard you worked for them.