Hello,

I have also suffered from debilitating nightmares from an extremely young age and have also suffered from depression like yourself among other things. I've done quite a bit of research on the subject.
What you are experiencing could be nightmare disorder but before you can be diagnosed ALL other factors must be proven to not be causing the nightmares. Depression can lead to more nightmares and insomnia as well. Infact, even minor anxiety can lead to nightmares which makes diagnosing Nightmare Disorder extremely difficult. Another thing, as of now it's very hard to treat but there have been some pilot studies done to treat nightmares using lucid dreaming techniques and visualization before falling asleep. I'd look into those as an option! They take time and practice (and haven't worked for me..) but they've worked for others.

Hope you can get some sleep soon.