Funky2603 (((((( HUGS)))))) to you for starters.
You might have lost your emotions the last time you tried ADs b/c you wanted too b/c of your Dad`s death. I know why my Gran died I did not want to feel anything, Happy was sure out! Sad, angry, upset, I did not want to feel anything at all. I was a Zombie for weeks.
I am on a sort of ADs for my ME. more for the pain that I get from it. Pain = Depression and Depression = more Pain At first I did not think they worked at all b/c I still had lots of pain. I tried to come off of them and the pain got really bad with just cutting down what amount I was taking! So they are working for the pain I get.
Do you hurt/ache feel very stiff first thing?
If you do then it could be that you mught have CFS (New name for ME) If you have tender points. Joints etc that hurt. Then you could have Fibromyalgia. That another form of CFS.
I say this b/c all the signs that you have told us about you feeling depressed are also signs in these too. You have said that you cant see why as you have very loving family/friends etc.
With CFS and Fibromyalgia you can feel like you have no go in you, feeling down, not wanting to start the day, not liking yourself etc.
So if you do hurt/ache and or tender points it might be worth talking to your GP about these too.
I know when I first had ME I felt just like you do now. I thought the pain and aching was from being tired and over doing things, and my painful joints was b/c I had hurt them by knocking them from being tired. The only bit I had right was the over doing things. With ME, CFS and Fibromyalgia you have to change the way you live your life and not try and do so much and have rest times between doing things.
It might be worth looking into if you do ache etc. If you have one of these things, then with help and meds and an understanding of it, can and will make life so much better for you and you wont feel so low and down about yourself all the time.
The other bit to me feeling so low was a shite xp1 but you dont have one of them