I was diagnosed with mitral valve prolaps when my son was small. He is now 35, so that diagnosis has been awhile ago. My doctor described MVP at the time as a heart condition and for many years I took Inderol to regulate the beat and help the pain.
My heart would do the same things you are describing now. In fact, I would actually have a pin prick pain that would be so fast I would wonder if I had had a pain at all.
When I found Curezone, I weaned myself off Inderol and began taking just a pinch of Epsom Salt everyday. Epsom Salts will help regulate your heart.
Now, here I am several years later and I have not felt my heart flutter or had a pin prick pain since.