I voted yes but I have been diagnosed with two different conditions since my cardiologist and my GP don't agree...either inappropriate sinus tachycardia (cardio's opinion) or postural orthostatic tachycardia (GP's opinion). Both are completely benign conditions, meaning my heart is structurally very healthy and my heart rhythm is not considered dangerous and it does not affect my life expectancy. My heart rate varies like yours: In bed, at rest, it is around 60-70 bpm; sitting quietly it is around 75-85 bpm; when I am up and moving around, it very quickly goes up over 100, usually around 120-140 bpm depending on my level of activity.
I know that you probably don't want to hear it, but you should have your symptoms checked out by your doctor. I could tell you what I do to control the POTS/IST, but they are both what are called "diagnoses of exclusion" meaning the symptoms can be caused by many other conditions that need to be ruled out before an official diagnosis can be made.