Hi... Welcome to healthcare magic. As you mentioned you have problem of constipation and blood in stool that may be because of hemorroid problem . Excessive straining at toilet time lead to blood in stool. Lack of high fiber foods and water intake in diet also cause constipation problem. Consult a gastroenterologist for further treatment. Bulk forming agent like psyllium is helpful in constipation. Warm water sitz bath also helpful in hemorroids. Topical anaesthetic gel helpful in hemorroids problem. Drink more water per day.. Avoid spicy food and too fatty foods. Avoid gaseous foods like cabbage,cauliflower, carbonated drinks etc.. I hope this will help you. Get well soon.. Thank you.