Hello Jo_Banana, and a warm welcome to the site, and know that it's not easy to post a comment that you might have been sitting on for quite a while, either altering what you've said, deleting it or just walking away from your computer, but this takes courage.
Having negative thoughts seem to be dominant when someone isn't feeling well and may not have been for some time, so any good news from another person seem to overtake a person who is struggling, this is when they feel helpless.
There are support groups you can contact but pleased you have joined the site with many different people who understand what you've told us and want to help you.
Sure your family have their own life, but so do you, and at the moment, it's you who needs the assistance because when you feel positive much can happen that won't affect a change in mood, but when you feel negative, there's not much that can excite you, especially when they aren't able to know how to do this.
Ask your doctor about 'the mental health plan' this entitles you to 10 paid Medicare sessions to talk with someone you feel comfortable talking to, and while you are sitting down by yourself, write down the points that begun this negative feeling, it's much easier for your doctor to read these points than you trying to explain everything to them, because you may miss something.
Please get back to us when you are available.