 [ Symptoms ] i am 36 and having these pains on my left side of my chest to the side of my rib cage does not hurt to breathe though took heart burn meds still there lots of pressure though can really feel it when i breath in [ Disease ] you should have a checkup as soon as possible it could be several things heart attacks can have a variety of symptoms from vomiting to pain in shoulders or pain like yours other symptoms can mock muscle strain or acid reflux do not put your life at stake run dont walk to the nearest emergency room for a workup