And welcome to the forum...
You have gotten some very good advice. Especially with the advice on self help books. There is one called "feeling good" by Dr. David Burns. It is very helpful. It has a lot to do with cognative behavioral therapy. Which is very helpful.
Since you are so far from everything I am going to give you a couple of free online sites...
I have heard that moodgym is pretty good.
It does sound like you have all the classic symptoms of depression. How much longer does your son have to go to school. It might be more practical at some point to move even though he would like to finish at the school he has been going to. For your sanity. To make it more convenient on you.
In the meantime keep posting. You have come to a good place.
Moderator-Depression and fibromyalgia
fibromyalgia, Chronic fatigue, depression, allergies