I have a sore stomach, taking Nexium, is there anything else I can do to ease the pain?

I am a 59 year old male, generally in good health. I take Celexa for panic attacks, Coversyl for slightly high blood pressure and Ranitidine for GERD. I went to the doctor a couple of days ago with a sore stomach. The pain was in the upper abdomen right where the center of the breast bone meets the abdomen. It seemed like it was the muscle that was sore, but occasionally the pain spread down and up to the center of the chest. I still had a few Nexium pills from a previous flair up so I started taking them again before going to the doctor. It seemed to be helping, so upon talking with me about my symptoms, he figured it was another flair up and gave me a prescription for more Nexium. I have been taking the Nexium for 4 days and it does seem to help, but not by much. How long does it take and is there anything else I can do to ease the pain when it comes on?