"If you feel a warm rosy, wave wash over you unexpectedly tonight"

One of the facets of the angiogramming process that can cause alarm (though, when you know it's coming, it's actually rather pleasant) is that, as the contrast fluid is injected, you get that "warm, rosy wave" you describe first in the relevant area, then washing down through the body.

"positive thoughts in your direction will continue"

Many thanks!