<s>[INST] I have been having some pain in my chest around my heart and just below in my side. I tend to get muscle strain easily when I do any kind of strenuous activity now days. I am 46 years old and things are starting to creek and crack a little more. Because of the location of the pain, I am a little concerned. It does hurt to take a deep breath most times. Could this be a heart problem or just muscle strain? [/INST] Hi. I can understand your concern. Ideally ECG and 2d echo should be done first in your case. If both are normal than no need to worry about heart diseases. If the chest pain is disturbing your routine activity then get a chest x-ray done to rule out any lung infection, or it could be just a muscle pull. Do not lift heavy weightsPossibility of musculoskeletal pain is more. You will definitely improve witChatDoctorbination of painkiller and muscle relaxant Chat Doctor.  Also apply warm water pad on affected areas. Avoid movements causing pain. Don't worry, you will be alright in 1-2 weeks. But better to first rule out lung infection.Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>