I am so sorry for everything you are having to endure. I have the same problem with my veins blowing, etc. For whatever it's worth, I have found that it helps me to load up with fluids the night before. I will drink one gallon of water the evening before and have found it really helps time and time again. This info is probably too late for this dr visit, but maybe next time. You are in my thoughts and prayers today for veins that work like new!