I'm sorry to hear that, it is really awful to run out of energy.
I have been dealing with major depression for many years, and I feel tired all the time too... I want to lay down as soon as I can - if I could, I would live on my bed! Maybe you could check with your doctor if the depression is back.
I stopped antidepressants because it increased the fatigue even more, and I got a bit better when I started exercising. Another thing is not getting enough sleep, so if you have insomnia like me then it could explain part of the problem. And last, I just started a diet this week since my doctor suggested that cutting heavy foods could improve my energy levels too. I know we tend to be skeptical about simple lifestyle changes, but maybe it could help you even if combined with medication.
Feel better