Some good news..
Appointment with a cardiologist today - seems it is likely that my chest pain is...chest pain. i.e. cardiac related as opposed to intercostal cramp. I'm not surprised, since painful as IC cramp is, the pain in my chest has been something else.
Next steps - waiting for appointment for 5-day cardio tape to try to catch my heart misbehavin'. Then hopefully having caught said misbehaviour, treat it with non-lipid soluble betablocker. The kind that doesn't get into the brain and cause confusion and horrific nightmares. And it will treat my high BP - which has also been a cause for concern.
In the meantime, on with my current assignments and not much time for knitting ;0( Hope y'all have a good weekend. India