I was before I retired an Echo cardiographer in a major Hospital in South of England.
All Echocardiograms are done by Cardiac Physiologists or Doctors both groups take the same exams, both groups do the reporting, it's a instant diagnosis once report done. The consultant will add this report to your individual problem and the way forward.
They are totally painless, an ultra sound beam views the structure of the Heart, picks up Doppler sound wave to check flow throughout the valves and assess the condition and heart function, one of the most valuable diagnostic tools available in the NHS.
You also get advanced invasive Echoes but that would be discussed with you.
I'm still working part time in NHS, but gave up my accreditation to British Society of Echocardiographers but my colleagues are working flat out to maintain the high standards expected from them.
This service was also a invaluable contribution to the patients on ITU during Covid.
When I was asked to return, I dropped Some skills and
I'm now sticking with Pacing and Devices (implanted Defibrillators etc)
But always proud to say I'm Cardiac Physiologist.
You will be fine nothing to worry about.