Hi billie. I am new to this forum and posted my own but wanted to reply to yours.
My situation is opposite of yours, I am 30 years old, been happily married for 4 years and we planned our first child which we both wanted and I gave birth on sept. 16th of this year and ever since I have been majorily depressed/anexity, hard time concentrating etc., etc.
My problem is although I love my son very much I wonder if I should have not had children because I was so very happy in my life before my child and now I get even function to work or take care of him etc.
Anyway, my advice is that if you really aren't happy in your relationship with your husband that you should get out of it because it will only bring you down and your family.
Hope I helped a little.