Hi
You need to get all your notes and results and ask the AME I am afraid.
The ECHO results in the presence of hypertension (you mention whitecoat but you are on drugs so presumably you do have 'real' high blood pressure even if it goes up further at the doctors) I suspect will need a referral for an initial but I am not an AME and I would need to see the actual measurements from the echo and your true blood pressure readings over time to understand their significance....
Good luck