Thanks for your query to HCmagic.
As you seem to know your disease very well, I would like to make one comment here. Even if it is not life threatening, it should be treated/ cured if it is effecting your quality of life.
In all probability you are having PSVT
which responds to vagal maneuvers like deep breaths. You have 3 options
1. take a daily tablet to prevent the episodes.
2. take a tablet as and when episode occurs
3. Get rid of it permanently by catheter ablation
You can choose any one after discussing with your cardiologist.
Right now i would request you to go to ER and get treated.