Hello. I'm female, age 51. overweight, on lisinopril for high blood pressure (which is under control, on the medication). For the last several months, I feel pressure in my upper chest, on the left side, a bit below the collarbone. When I press on the area (the ribs), it increases the pain. There are times when it does not hurt at all. It's not a sharp pain, but rather a dull pain that radiates out to about the size of a small plate. When I push on the right side, it does not produce pain at all, so this is only on the left size. I'm assuming that since this has been going on for months and I'm still here, that it's not cardiac related. But what could it be? I've had pleurisy in the past, but that pain was located more in the center/breastbone area. Thank you!! :)