I Have Been Having The Feeling Of My Heart Flip

I have been having the feeling of my heart flip flopping since early november. I spoke with my primary dr and she did blood work and all is normal. I still have the palpitations everday and they are very pronounced when i am not moving. The past 2 weeks I have been having pain in the left side of my chest and it feels as if it moves from the front of my chest to the back along with the palpitations. I had an ECG done last year when I was pregnent due to the same issue but it was not as bothersome as it has been since November. My dr is waiting to get the results of that test sent to her before ahe will do anything. But i am scared and in pain.