My wife is having continuous stomach cramps for about 4 hrs. She has used pepto bismol (bismuth subsalicylate) without success. She has not vomited. She is not nauseous.

This . This question is under the "obstetrics" division, is she pregnant? If she is pregnant she needs to be seen immediately. If she is having continued cramping or pain, vomiting, or fever then she needs an emergency evaluation.