Palpatations lasting nearly 24 hours yesterday to varying degrees. Kept calm, woke up this morning and all is good. Could be linked to previous day's mildly strennuous exercise, but didn't awake with symptoms...they came on mid morning following 3 mugs of coffee.. Weird. No coffee today! Got first meeting with cardiologist in 9 days and following heart scan, the only thing found was a slight thickening of one valve. Those palpatations are not nice!