Why am I so fucking tireeeed and what things/meds can help

Okay sounds so fckn dumb, but I'm so fucking tired, I've tried everything, I eat healthy, sleep enough and stuff but when I wake up and go to school I can't stop sleeping there, all my friends think I'm high all the time because I'm mentally so exhausted, I also sleep like all the time after school I've tried not to do that to be less tired but I literally cant physically stopp myself, idk where it comes from, okay I'm severely depressed, but it never was like that that mzy bodz just shuts down, I'm also taking antidepressants, can that be the reason? I was about to be diagnosed with a general anxiety disorder, but now I'm so tired I don't even feel anxiety, liek wtf I was so stressed before and now I can't even think or care about anything. Do y'all know the feeling right before passing out, I feel that the whole time when I'm trying to stand up,