I occassionally get extreme stabbing pains deep in the upper left hand side of my chest. I’ve had them since I was about 13.

I have a very healthy heart(have had numerous tests) and am fit. I sometimes get low blood pressure and also have fibromyalgia.

I know that heart attack like chest pains are a symptom of fibromyalgia, but I’ve been getting them when my fibromyalgia is not bothering me and is ‘dormant’ so to speak with no other symptoms or apparent inflammation.

It’s an extremely sharp pain, like being stabbed or bones breaking and usually lasts for about thirty seconds, coming and going in waves. It hurts like hell and never ceases to scare me when it happens. After the initial pain wears off it still hurts a little.

Can low blood pressure cause it? Or what else could it be?