I gave whole blood on Wed (5:30 pm). I donate regularly and this time hurt significantly. The phlebotomist mentioned scar tissue . On Thurs my ring finger , on the same side as the donation site, hurt like I had jammed it, but I hadn t. I didn t sleep well Thurs night with my hand hurting and woke up Fri morning with a swollen hand and much pain in the top of my hand and three fingers -middle, ring and pinky. The pain seemed centered at the base of the ring finger and just behind that on my hand. I went to the doctor where they took an x-ray (it presented like a broken bone) but the x-ray showed nothing broken. I have been taking Naproxen and put ice on it but no reduction in the swelling. It is now Sunday and I have not seen any change - still swollen and painful. The back of my hand is also warm to the touch.