I took my colonoscopy prep 2 and a half hours ago i barely vomitted it up just now. i took 2 bottles of magnesium citrate. my test is 12:30 tomorrow afternoon what should i do?

Wait for prep 2 work: The purpose of the liquid prep (which everyone agrees tastes really awful) is to clean out your colon so the dr using scope can see clearly during the exam. It is designed to cause successive bouts of diarrhea, until you can't go any more. If you only vomited up a little, it may still work as designed. If you don't experience results, call and reschedule the exam. They may give you a diff prep