Our expert says:
Hi Carol – you don't mention your age or medical background eg whether you smoke, are diabetic, etc. However, you sound young and is exercising without difficulty. Your chest pain does not sound at all like cardiac pain, which tends to have a clear pattern and is not sharp or sudden or thumping like yours is. Your other chest discomfort, which you call "heartburn", sounds like what is called reflux, due to reflux of stomach acid into the oesophagus. It often gets better - as in your case - when people lose weight, but sometimes requires treatment with drugs called PPI's (proton pump inhibitors) or with laparoscopic ("keyhole") surgery.
From the evidence we have we can be confident your chest pain is not from the heart. However it is less easy to know where it is coming from. The most likely is that it is part of what is called a "chest wall syndrome" - ie it comes from the bones or cartilages or muscles that make up the structures of the chest wall. This is a common condition, which often causes anxiety about the heart, but usually disappears spontaneously with time. If you are generally healthy and well and not at high risk for heart disease my advice would be to give it time - the probability is high that it will just disappear on its own without you having to see a doctor.
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