Hi I'm new here I think have some kind of gastrointestinal disorder/syndrome or maybe even cancer that I haven't quite figured out yet. I'm sort of confused because I don't match up perfectly with any of those 4 things listed here ->( http://www.ibsgroup.org/symptoms ) I'm wondering if it's possible to have IBS or Ulcerative Colitis with slightly different symptoms than those listed? I've always had constipation/digestion problems I'm 19, but for the past two weeks my stomachs behavior has gotten so painful and frustrating that I'm barely able to function through out the day. Maybe some people here with some insight could tell me if it my problems sound like IBS.Alternating Diarrhea/Constipation? Yes (Had diarrhea for 4 days, then constipation for last 10)Abdominal Pain? Yes mostly gas pains, but I had very painful cramping that sent me to the hospital when I was having diarrhea Bloating? Yesmucus present? Maybepersistent diarrhea? Noloss of appetite? I can eat fine in the mornings, but I lose my appetite from gas pains at night.rectal bleeding? Yes bright red blood in stool, but I had a CBC and I'm not anemic. It only happens when I'm constipated and straining so it's most likely from fissures/hemorrhoids.Fistulas? NoFever? NoMalabsorption? NoWeight loss? Maybe nothing significant, but not eating dinner isn't helping.Fatigue? Occasionally yes I've woken up with bloodshot eyes for the past 2 mornings even after getting a good 8-9 hours of sleep.Flat/ribbon stools? YesI'm scheduling an appointment with a gastroenterologist for sometime this week and I guess I'll see what they say my general doctor has been useless and has only worried me more.