Hello, I Have Had Two Stents Put In Over The

Hello, I have had two stents put in over the past 11 months but am feeling some sharp sudden pain which is not severe but moderate, and does not have the accompanying pressure that I have felt both times when I went to the hospital and ended up having stents put in. Is this most likely a stomach issue? The pain is in my upper chest and no where near my stomach and otherwise I feel decent.