Hi, to me it seems that you should get your blood pressure measured, go for an ECG, echocardiography
, complete blood count
, chest X ray
,and meet a cardiologist because your blood circulation might be disturbed , till then avoid exercise and dont run because this may aggravate the condition .it is good to not to waste any more time as this is an issue concerned with heart brain and lung which are essential for our survival so stop running on the track and run first to a cardiologist.
wish you all the best.