What a great post-op report @brumasterj!
Thank you for sharing your story with all of us. It's helpful to hear some else's experience and have an idea of all the different things we each went through.
I too had tachycardia. For a long time! I had terrible pain between my shoulder blades. For a year! Turns out I had fractured ribs in the back from the torque during surgery.
Sounds like you are active...perhaps a little too much? You sound like a man! haha
3 weeks is not much, so you behave and listen to your body, okay?
Will you be going to Cardiac Rehab? It sounds like you are already past that...mowing the lawn?
I had to wait six weeks before being able to pull/lift/push...here you are at 3 weeks doing yard work!