<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello and thanks in advance. All of a sudden I started to get a really strong pulse under my left rib cage. So strong that my husband can feel it and you can see it. I am a 57 yr old women in good health, but have a heart murmur. What are your thoughts??? Thanks again, Barb  <response>: Hello! Do not worry. Your situation may be transitory. However, the heartbeat that you refer may be a problem of heart rhythm Austria. I would recommend you to do some examinations. First ECG electrocardiogram to evaluate the heart rhythm; second cardiac ultrasound to see cardiac function. If the situation continues, you need to monitor heart rhythm for 24-hours Holder rhythm. According to the answers of these examinations, you should receive the adequate therapy. Take care, and thank you for using Chat Doctor for your concern. Please do not hesitate to write again if you have further questions. 