Has anyone had to have an iron infusion?

My iron count was 30 which I think is pretty low, and I'm booked in today for an infusion.

Has anyone else had one of these? Did it hurt? I'm really not a fan of needles and I'm really hoping it's not in the back of my hand.

Did it make you less tired after? I assumed i was just third trimester tired and tbh I was always tired before pregnancy.