Last 10 months I have abdominal pain after poop that is loose stools with mucus 4_6 times per day. Some abdominal sounds I hear. It have black stools 6 times per day repeat it ones again in month of march 2020. I consult gastroenterologist december 2019 I done cbc, use abdomen ,occult blood stool test all are normal. After 2 months I have severe pain in abdomen I done analysis profile test, liver function, renal function ,cbc ,colonoscopy endoscopy all r normal. They give sarotena tablet for good bowel movement for 3 months. Now dosage is complete still I have pain in abdomen &rectum. My hb level becomes low 9 mg.in february my hb level is 13 mg. I hav itching problem irregular periods also. Now what can I do. Again can I done all blood tests colonoscopy please reply.