Pap smears shouldn’t hurt, but they might feel uncomfortable. Some describe it as a minor pinch whereas others don’t feel anything at all. Everyone has a different level of pain tolerance, but the consensus is that it should not be extremely painful. If it is, let your doctor know.
You can also lessen or prevent potential pain by using the restroom and emptying your bladder beforehand. You can even take an over-the-counter pain medication (i.e. ibuprofen) an hour or so before the exam.