I have bumps on my veins on the top of my hand. It started with one and now there are 3. They hurt and the vein is a little swollen. What is this?? I am 35 pretty healthy no smoking or drinking regular exercise and eat healthily. My back went out and I was in the ER cause my back went out and they came right after that. The dr put me on a really high dose of calcium and joint supplements is it something to do with that??