I am a 61 year old whose work is high stress and whose family is high stress. I have Factor V Leiden and, in 2008, had a transcatheter closure of a PFO (following an ischemic stroke that left no permanent physical or mental damage). I exercise regularly and intensely. Today, I was in spinning class, my heart rate monitor showed a rate mostly in the 160's, but occasionally reached the mid-170's--a bit higher than usual. However, then the monitor began to fluctuate dramatically, showing 200, then 140, then 180, etc. We tried a different monitor and a different cycle, but the fluctuations continued. Best estimate is that the fluctuations lasted from 1/2 hour to 1 and 1/2 hours. I felt no physical symptoms outside the norm in spinning class either before, during or after spinning. When my BPM became regular, it was higher than usual--dropping slowly from about 95 to 80 over the next 8 hours. My resting BPM typically ranges from 58 to 62. I have just moved to a new state and have not yet firmed up new medical care providers. Should I go to an Emergency Room soon or may I safely wait for my first appointment with my new PCP in three weeks?