I get similar chest pains, sharp stabbing painful, usually don’t last long, seem to come from nowhere Nd has happened to me since I was 21 years old, maybe longer, Doctors told me then it was most likely stomach acid or something of that nature, but I wouldn’t really know unless I strapped some monitoring device to my chest for 24 hours, but I never have, I’m 39 now, a couple times in my life I’ve felt super dizzy, sweated profusely and felt as though I was going to pass out, but never quite did, and returned to normal within less than twenty minutes, it’s happened while laying down on a bus, while flying on an airplane, once while sleeping in the middle of the night, and once while just relaxing about an hour before bedtime, sometimes I get real lightheaded, and feel as though I migh fall down, If I don’t sit right away, But never have, that usually only happens If I get up too fast, or sometimes If I’m working too hard, I like to think I’m healty but sometimes wonder what this is all about, or if this is all related, I’ve smoked a lot in my life, but have quit a lot of times too. The Chest pains though make me wonder, cause they hurt really bad, come from nowhere and vanish without a trace, curious if this is common or if I should be worried, any good advice would be appreciated. Thank you