Sweetie, even though you are obsessing about food, you my dear are not suffering from anorexia nervosa!
You do need to seek professional help in order to find the problem and deal with it properly. From reading your posts, my guess is your husband is the root and you may be afraid of losing him if you gain weight. He doesn't seem like he is giving you the love and understanding you need right now, and this "could" cause you to become anorexia. I hope you find the much needed help. Warm hugs to you.