I have been dealing with extreme fatigue for months now. I can barely manage I part time job. I'm so damn tired all the time even after 8-12hrs of sleep. 
I got blood tests done and a sleep apnea test. Only thing that showed up is slightly low vitamin d (23ng) which I am now supplementing. 
I'm horribly depressed. I feel like my life is over. I'm scared I'm going to be half asleep for the rest of my life like this. I have lost all hope. 

I have been convinced I've had other illnesses in the past. I have bad health anxiety. But I don't see how anxiety could cause this bad of fatigue. I don't do anything anymore, I don't have the energy. I try my best to make it through work but it's getting hard to do that.

I am barely functioning. I dont go out with friends anymore. I quit exercise because I'm scared it'll make me more tired. I can barely eat as I've lost my appetite.I don't know what the fuck is up with me. I have no one to talk to about this and I'm more depressed than I have probably ever been.  I really feel like there is something seriously wrong with me beyond anxiety and depression.