Hi, The symptoms you are experiencing, including bloating, flatulence, black and grainy stools, and fresh blood in your nose and anus, can be indicative of several underlying medical conditions. The black and grainy stools suggest that you may have gastrointestinal bleeding from the upper part of the digestive tract. This could be due to various causes, including ulcers, inflammation, or tumors in the stomach or small intestine. The fresh blood in your anus could be due to hemorrhoids, but it is important to rule out other causes of rectal bleeding, such as polyps or colorectal cancer. The bloating and flatulence can be due to various causes, including excessive gas production, lactose intolerance, or malabsorption. The use of iron tablets can also cause constipation, which can further worsen bloating and flatulence. Given the combination of symptoms you are experiencing, it is important to see a doctor for a proper evaluation and diagnosis. A gastroenterologist may perform additional tests, such as an upper endoscopy, colonoscopy, or imaging studies, to determine the underlying cause of your symptoms and to provide appropriate treatment. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician