There are creams and suppositories for this eventuality that you can get at a pharmacy, no prescription needed. If you were going frequently, the area may have gotten irritated. The creams and suppositories (i dab a bit of cream on the end of the suppository to make it easier to insert) may have medications in them like cortisone to shrink swelling and to relieve pain. If you are still in very bad pain after such meds, then you might need surgery, which is often done in office / outpatient.