Hello I appreciate your concern Looking at your description this might be related to infected hemorrhoids, Infected anal gland, fissure in anus or an abscess. If I were your treating doctor I would have advised you for a battery of tests like blood for hemoglobin, CBC liver function test and proctoscopy or endoscopy if need be. Meanwhile please follow these guidelines Avoid constipation by taking laxatives or stool softeners Have lots of dietary fibers, fresh fruits and vegetables. you can apply anaesthetic ointment like lignocaine for pain on touch. Hope this answers your question, please feel free to ask for more clarification or fill up questions Wish you good heath