<s>[INST] In line with the same question, my Left side is in pain (upper left quadrant). It pains so bad that I come home after workout and have to floss my gums and brush and then the pain subsides in 10-15 mins. Is it due to me drinking cool water during workout or is it due to infection or something else . Do I need to be worried about it ? [/INST] Thanks for your question on HCM. In my opinion it seems muscular pain only.But since it is left sided chest pain, we have to rule out cardiac and pulmonary causes first.So please get done1. ECG to rule out cardiac cause.2. Chest x ray to rule out pulmonary cause like chest infection.If both of the above are normal than it must be due to muscle pull only.So try to follow these.1. Avoid heavy weight lifting.2. Avoid strenuous exercise. 3. Take good painkillers and muscle relaxant. 4. Avoid bad postures in sleep.5. Wear chest belt for minimal mobilisation of affected part. </s>