WORRIED HAVE VERY HIGH FIT RESULT

Hi, wondering if anyone can help. I have a FIT result of 155 (normal values  are <10) so really worried right now. Have had loose stools last couple of weeks with abdominal discomfort. Apparently bleeding can show if there is a GI infection but with a result this high I can't help but worry. Has anyone else had such a high result and if so what has been the outcome. Any comments much appreciated. Thanks in advance