bowel preparation
"I'm 23 years old and was scheduled for a colonoscopy due to irregular bowel movements.  Since I can't write my whole experience let me just say it was awful. I managed to get about 2/3 of the first dose down while holding my nose using a straw and sucking on a lemon and then taking a swig of juice.  After that 2/3 my stomach could not take anymore I immediately started to vomit after each sip like uncontroably to the point of where I had to stop the prep and for the rest of the night I was violently throwing up with an extreme headache like having two migraines at the same time.  I had to cancel my procedure as I couldn't keep anything else down after."