today after leaving second period at roughly 10:43am, my wrist on my right hand started to hurt a little bit so i looked at it, i noticed that my veins had gone from where they normally are, at my wrist, to my palm, and then i saw little dark veins all the way up to my fingertips, at the tip of my fingers, including my thumb, it was dark greenish blackish colors, i freaked out and went to the nurse, and both of the "experienced" nurses were a little freaked out by it and had never seen anything like it, they taped a bag of ice on my wrist and sent me to class, my hand eventually stopped hurting, and my fingertips went back to normal color, any ideas what it was? also another thing, my thumb hurt like crazy, and my hands were very cold. This was both hands too.