I have my ups and downs with depression. Many times things from the past will pop up and get me down. I have a really good life and so I get frustrated when I feel that way.
I don't think you should belittle the way you feel. Take your time and wait for it to pass. I am sorry for the burdons your are carrying right now. Remember you can only do what you can. Sometimes for me that means I don't do very much. Hope you feel better soon.