Ooh, a good friend of mine died from one of those. Really suddenly. With no warning. In the bath 
Yes they're nasty and comparatively unknown to the public despite the prevalence and consequences. My aunt and father in law died of them and a colleague at work managed the rare feat of surviving one while he was driving to work but he was never the same again.
Fink you're a year younger than I so you should get the scan next year or the one after - seems I got mine a year early at 64. Takes about 10 minutes, just don't get too excited when a nurse gets out a huge amount of KY to rub on your chest.
