there is something in my blood

There is something in my blood
Something lurks within these bones
Slithering in these veins of mine
I once joked that my blood would kill me
Those times where my veins ached in pain
Begging to be split open so whatever thing
That lives inside could finally be released
Those thoughts no longer seem to be jokes
Created by a suicidal teenage mind
Maybe it was a warning before the signs
Now I find myself looking closely at my wrists  
Watching the pulsing veins that lay beneath the skin
Moving, coursing, running whatever it is through them
There is something in my body that will kill me
Will the doctors figure it out before it gets me?
Or will my known demons get to me first
It's a race to the very end it seems now