I've been having similar Bram, not as bad as yours though. I've been quite scared by them as I've had a lot of dizziness and fainted a few times recently too. If the docs think it's spasmodic, have you got anything for that? Is there anything that seems to set it off? Have you had your blood pressure checked (I'm guessing yes lol)? Sending hugs cos I can imagine how scary it was xxx