I Was In He Emergency Room Last Night And They

I was in he emergency room last night and they did a ct scan and an ultrasound to check on my appendicitis-like symptoms. They saw nothing to be causeong the horrible abdominal pain I am having. They prescribed this 4 liter bottle ofstuffthats suposed to clear out my system and told me to stay home today. I have gone through half the bottle 8 ounces at a time every 10-15 min but now the pain is in my stomach instead of the lower right side, and it comes in very sharp waves. I am farting frequently but still cannot poop. I feel like my stomach feels like it is going to burst. Is this really just severe constipation? Why would this liquid not help? Why can I fart but not poo?