I'm not sure that I'd focus as much on the greypallor of your skin as I would worry more about your blacking-out four times in recent months. If you haven't been evaluated by a physician for these episodes...
Whatever the reason that is causing you itch in your heart-I do not know.
Have you consulted with your family physician? Do that first.
After that you can practice daily : Nadi Shodhana or Anulom-Vilom Pranay
Symptoms and Diagnosis of Lung Disordersby
in the lungs can also lead to coughing up of blood (hemoptysis), a bluish discoloration of the skin...; Are there symptoms of another disorder that could cause a cough (for example, gastroesophageal reflux or postnasal...