Been having a slight pressure/fluttery feeling right below my left rib cage. not experiencing any pain but have had it for about a week now and beginning to get concerned. a friend said it could be a muscle spasm. should i be concerned?

I think you're...: ...already concerned! Here are some reasons that I, as a doctor, would also be concerned: 1) if it IS painful. 2) If you get other symptoms with it. 3) If it interferes with your regular activities 4) If you're REALLY worried. Sometimes a visit to the doctor is therapeutic if only to reassure you that there's nothing to worry about. Best wishes. Dr. Anne