Blue fingernails, polish-free

Last night I noticed the fingernails on my right hand were actually blue-ish. I showed Sherrone next to me, because it seemed quasi-unbelievable. The rest of my body wasn't that cold, but I was chilly. I think my heart doesn't do a very good job of getting blood everywhere sometimes. Because for months my left foot went numb everyday. That seems like some kind of a problem, right? But not really, because what do you do about it? Say, owiee, my foot is asleep, and move on. ...