Is this a mental disorder?

I have done a lot of research on mental disorders so I know what I'm talking about and I think I might have Dissociation Disorder (DID). I feel constantly as if I'm having an out-of-body experience or [alternatively put] it's as if there is an alien in my body - correction - I feel as if I'm the alien in some one else's body. I know my body is moving, etc. but it is as if my brain and body don't quite acknowledge each other. I also show signs of depression, self harming/suicidal acts and thoughts, long-lasting and short term mood swings, claustrophobia, occasional obsessive activities, eating disorders (Time periods of binging and then followed by starvation, lasting about three months each time), identity loss ('Me' and 'I' are alternative words for 'her' and 'she', holding the same meaning) and memory loss... for example: I can barely remember my childhood and in stressful scenarios I completely black out and have no recollection of the events. Help me please!