First Colonoscopy Horror

El
I am 18 years old and having my firs colonoscopy today at 9:00.. I'm so tired and can't even drink anymore of my second dose of ex lax... Anyone have ideas to help me down the rest.. I'm so sleep deprived and I feel like my stomach can't take anymore. My headache is unreal and I've been crying since my first dose at 5:00 yesterday