question: I have a history of kidney stones. I usually have some side abdomen discomfort and sometimes grown pain that throbs. Figure it s probably passing stones. I am also sometimes very itchy in my rectum. Sometimes I ve noticed some red blood spots on tissue. A while ago I had a itchy sensation throughout my body that last ed days. Today I saw a small worm with black tips in my toilet bowl while urinating. Don t know if it was already there or if I urinated iit.please help