I'm still at home :-)
The Paramedics and ambulance arrived, and brought in a big bag of tricks that probably only the likes of Chris would understand!
After all kinds of tests and a lengthy Q&A session they consulted with their HQ and decided that it would be in my best interests to remain at home and continue with the medications, but to call them back if I have any more episodes, so hopefully, I'll only have to worry about any arterial blood gas tests they want to do, but that won't be just yet.
So prayer works :-)