I believe you are hyper-attuned to watching your body move with each heartbeat. The numbers you cite, and which you are comfortable with (because you cite them) suggests that all is well. You should try to focus on other aspects of your health.

FWIW, everybody's body moves with heart rhythm. You don't/haven't noticed it until you began to pay attention, and now it consumes you. Your physician's prescription has your BP under control, good control, and your strong movement means your heart is preserving a solid ejection fraction (EF). You are in the best place possible for someone needing help maintaining one's blood pressures in a good range. Perhaps you can put some energy into figuring out, researching, ways to get off the medicine(s) by adjusting what CAN BE adjusted....if that is possible. It may be a way to channel your energy and angst, and be somewhat more productive than fretting over your body movements due to heartbeat.