question: Hello doctor, I am having some chest pain on my left side. It feels like it is around my heart. Kind of a slow, deep ache from my armpit, over the whole chest, up to the clavicle. I have been having a bit short of breath, and when I stand up I feel really dizzy and light-headed. It takes about 10-15 seconds to feel normal again. It has been like this for the last three to four days. But I have experienced pain in my chest like this before, but it has gone away in a day or two. I am 29 years old. I have a healthy diet and no previous health concerns.