@agb I also experience inflated blood pressure readings when my chronic pain level rises! Each morning I take my vitals [weight, temperature, blood pressure x 3 readings] and notice when it is a "bad day" for pain level, my BP is also up. Practicing relaxation techniques will sometimes help. When I am at a doctor's appt, we will talk about my pain level, and do indeed correlate the BP reading in the office with not only the "white coat syndrome" but the pain that day.

It might be best to check with your cardiologist and confirm they will want you to continue on those medications. Is there anything being done to reduce your chronic pain, and then hopefully your blood pressure issues? Our primal instinct to an introduction of pain or discomfort is to go into fight-or-flight mode.
Ginger