Pammy, just to give you a heads up with the dye for the sentinel node, they inject it under the nipple tissue - sounds a lot worse than it is - just like a bit of a nipple cripple (pinched nipple) that lasts for a few seconds, more a pressure thing! Then you get to watch the dye on a screen - pretty fascinating when you think about it! May have to massage your breast to help the dye get to hour sentinel node and all up mine took about 1 1/2 hours and most of that was waiting for the Dr to arrive from another surgery. Xx