Sharp stabbing pain under left nipple, lasts 1-2 seconds.
Hi, I am new to all this. For the past year I have been having a sharp stabbing pain, like a needle, under my left nipple. It only lasts a second but it gets my heart going (from the shock).. These happen sporadicaly and can have one a day for a while then none for a month. I have had all the heart tests, ecg, bloods, stress test and still no answer.
I am asking for advice on what this could be. I am a googler and have googled this and come up with many answers. But most are breathing related.
I am 38, male, mild smoker, stress free (as one can be in this environment), live in the country, active and fit.
Please can anyone help.