I've had iron infusions. Usually your doctor will order a series of them, not jus one. You probably won't be able to tell much of a difference until after you've had a few. I had one a week for eight weeks. I started feeling less dizzy and had more energy after about
the 6th infusion. The first infusion will take longer than the others because they'll give it to you slowly to make sure everything is fine. After your first one, it will only take about
a half hour once they actually start the infusion. Your visits will take a lot longer though, or at least mine did, because by the time the put in the IV and hooked up the iron, and saline to clear the line it would take about
two hours.
Good luck, I'm sure you'll do fine :)