From last 4 years i am having palpitations like one strong beat for once in a 2 weeks or a month till now i done all tests like ecg,2d echo,tmt, blood tests,
thyroid tests,24 hours holter monitor tests were done 3 times and last September also done all tests except 24hours holter test and now my left side of chest downside uncomfortable feeling it started and when i am thinking something happened to me then i am going to be faint but again relaxing nothing happens to me feels then went normal maximum 2 days once it coming like something weird feeling in my left side of chest downside what is the problem and by the time i checked my pulse through oximeter i went normal what is the problem