Does anyone know about short twinges of chest pain?

[Sidefire]

It's hard to describe how it feels, but I'll try my best. It's like a snap of the fingers. It feels someone grabbing a thick muscle in my heart with two fingers and slowly twisting it, then flicking or snapping. It's painful enough to catch me off guard and freeze my thoughts, but not enough to cause more than a flinch at most. They last no more than a second or two, with the ending "snap" feeling being most painful. Sometimes I can feel a faint aching sensation on-and-off for the rest of the day.

I remember first having one when I was around 13 or 14, but they don't come very often - maybe once a week or month or even few months, it's not consistent. I'm 19 now and this past week or so I've noticed having several, maybe between 3-5.

In regards to my health, I'm pretty average. Healthy weight, thyroids (last I checked), height, blood, etc. No physical ailments that I'm aware of. As for mental, I've had severe anxiety and depression for almost half of my life. My anxiety causes IBS, too. I don't know anything about heart diseases that run in my family, but I have diabetic relatives that I think developed it from their fattening, sugary eating habits.

I keep telling myself it's benign and most likely anxiety, but I'm not sure. Has anyone else experienced this?