On the echo my heart was pumping at 66. is that ok and is it at that moment in time or does it change throughout the day depending on activity?

Resting heart rate: A normal resting heart rate in an adult is 60-100 beats per minutes. With a normally functioning cardiovascular system, heart rate will increase to meet the demands of increased activity, and decrease when less active.

Normal: 66% is normal. Anything over 55% is normal. Understand: it is abnormal to be too high. You're just right. To answer the rest of your question: normal EF tends to stay in the normal range but the exact number can vary depending on loading conditions, hormonal influence, and the means used to measure it.