I have had a chronic stomach ache for about 10 of the last 14 days. The pain is located in the upper abdominal region. It s a burning/nagging pain that has been on and off. Stool is loose but going to the bathroom does not make me feel better. I have had such stomachaches in the past, which only last about 2 days. I thought I had a case of lactose-intolerance. I have not had dairy the last 2 weeks, but this stomach ache does not go away. What may it be?