Hi Guys, 

First time posting here, hope I'm in the right part of the forum. 

I'm female and about to turn 31 at the end of the month. I've had IBS for 10 years so I've always had bouts of diarrhea however for the last 6 months or so, it's been a lot worse. It honestly didn't even occur to me that it was anything to worry about, I just put it down to IBS flare ups. However I've been off work the last 5 or so weeks with diarrhea multiple times a day, particularly after eating. The diarrhea is never really consistent - sometimes its fluffy and floats, othertimes it's 'bitty' and all broken up in the toilet. Sometimes it's bulky, sometimes it's pencil thin. Along with the diarrhea, I'm also getting abdominal pain. The pain seems to travel - sometimes lower abdomen, sometimes upper, sometimes in my stomach. I've also had occasional nausea and have been told by several people that I've lost weight despite not doing anything to lose weight, although I have noticed I'm eating less as I just haven't felt particularly hungry like usual. With the diarrhea, I sometimes get feelings of incomplete evacuation, or a feeling like I have to go but nothing comes when I go to the toilet. I have occasional clear mucus in my stool but haven't had any blood bar a couple of bright red flecks on the rare occasion, which I put down to minor anal tears due to the diarrhea. 

I've seen my GP who thought it might be food intolerance since it mostly comes on immediately after eating, and was sent for a blood test. The blood test came back mostly okay but did show low creatinine, low folate, and slightly elevated CRP. She wasn't worried about the creatinine or folate (just told me to take folic acid supplments or add more green veg to my diet), but said the CRP is a marker of inflammation in the bowel. The stool test came back clear for parasites/bacteria, and was also clear for gluten intolerance as well so from what I understand infectious conditions and Coeliac are ruled out.

The doctor is now sending me for a liver function test as well as another stool sample to test for Calprotectin. When the doctor spoke to me last to arrange the follow up tests, she really pressed me about if I'd had blood in my stool, and stressed to me that if I experience blood, or severe abdominal pain I'm to go straigh to A&E. I know I shouldn't google but it's hard not to. Google tells me that Calprotectin testing can be used for both Crohns/Ulcerative Colitis, and colon cancer. Given the way my GP stressed about going to A&E if I had blood or severe pain, I'm worried she thinks it's cancer. 

Has anyone else had similar symptoms and medical results? What was the outcome? What will the Calprotectin test tell my GP and what sort of tests should I expect if it's abnormal? Would really appreciate any and all thoughts and advice. 

Thank you in advance.