Hi!
I have been where you are now.
It is important to get OUT when you are depressed. It doesn't ahve to be expensive out.. just walking where there are people. Getting to a meeting (alanon or naranon helps too.
Focusing on the present is very important. Worrying the future is not going to fix it.. it will just ruin today! What can you do today.. this very minute.. for yourself to get the focus off the worry? Do you have a closet to clean? a drawer to clean? something to sew or repair? a book to read?
Did you get the Book "Codependent No More" by Melody Beattie? Get a journal and write down all the things she suggests! Try writing all your feeling sdown on this whole subject. It helped me a lot do do this.
I think you are having normal feelings considering your situation. Do what you can to move forward. If the depression continues, try a professional, tho I found meetings and melody Beatties books were much more helpful to me than counselors.