Getting Iron Infusions (I'm scared!) Please help

Hello all, I have been severly anemic for a long time. I had RouxenY in 2001 and this complicated the anemia. Now I am trying to schedule reconstructive surgery. My date has actually been cancelled because my hemoglbin levels are too low. I am scheduled for iron infusions in a week and I was wondering about the infusions. Do they hurt? How long before my hemoglobin goes up? I'm really afraid, but I have to go through with the infusions in order to get the reconstructive surgery. Any information you can offer about the infusion would be greatly appreciated! Thanks for your help.

Hi, I just found out I have low iron, I dont have low hemoglobin, Im having surgery on the 26th hopefully, I wish you luck and I am thinking of you, Im sure you will have some answers, how much did you lose, Love, Jade