I know how you feel about not being able to pull out of it. I often ask myself the very same question. I wonder if it's my willpower not being strong enough, or what but I beat myself up because I cannot pull myself up out of it no matter how hard I try.
Don't despair, you are not alone. That's why we are all here. Just trying to figure things out and help others do the same.
I think that you need to go to a hospital or call your doctor right away.
Are you on any meds? And, are you taking them? It's important to take your meds as directed by your doc.
I hope things get better for you. Keep us posted.
Lack of sleep can be part of depression but you have some very realistic concerns that would cause anxiety and stress in anyone, regardless of what's going on. It would be worth speaking to a therapist or counselor that could not only provide supportive advice but practical assistance.