The parasite

par·a·site.
1.an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host's expense.
You would call the thing inside of me a Parasite. It needs me and I need so you can both of us are parasites living off one another.
I live with it every but I am thankful that it lives with me. It saved my life that night. Because on March 23, 2016 at 3:00 am I died.