Thanks Munie and Art for the lollipops and stickers.
I am home now and exhausted but all is okay. I'm okay.
LT - regarding vasovagal response - yes, that is absolutely what it was. It has happened to me before but doesn't usually. I actually don't think it's related to my phobia - it's that I'm small and have low blood pressure, so my body doesn't react well to losing that much blood.