Hello, you probably have a fissure or hemorrhoids and im assumimg you have not consulted a doctor yet. I would suggest you visit a general surgeon at the earliest.
Next Steps
Meanwhile you could apply Anovate or Proctosedyl Ointment several times a day and take three teaspoons full of cremaffin syrup before you go to bed at night. Include your diet high in fiber as well.
Health Tips
This condition you probably might be suffering with could turn chronic and become less responsive to medical treatment if left untreated. Consult a doctor as soon as possible.