They are having a blood drive at my school next week and I was thinking of donating, but am a bit worried to do so. I am mainly worried about the sterilization of their equipment, there are a lot of people there and it just makes me think that "Will they forget to sterilize something"? Does it hurt to give blood, like what do you feel like during and after the ordeal? Am I allowed to drive after it? What can and can't I do after giving? Hoe much do they usually take?