Hi, I have been having upper stomach cramps, pain, that have now gone up toward the esophagus. It has been three days, and I started taking over the counter Zantac yesterday, but decided to add a very low dose of Xanax ( 1/2 of the 0.25), since I know there is stress involved. The pain and cramps are in the middle of my chest. Do I need to consider other problems? I am female, 52 years old. Thank you.