Feacal calprotectin level high

My fecal calprotectin result is 500 µg, and my doctor did a stool PCR panel test. Last year, my endoscopy showed chronic gastritis. My doctor asked me to wait for the SIBO result. If it is positive, it could explain the stool result. If it is negative, she suggested we should do a colonoscopy. My only symptom is having mushy poop once a day. I am very anxious about my result. Does anyone have a similar problem?