Venofer Iron Infusions?

Mrs โ€ข Mother to a beautiful 3 year old baby girl, wife to an amazing man, ectopic pregnancy 1/23/19 and our ๐ŸŒˆ๐ŸŒˆ๐ŸŒˆ๐ŸŒˆ baby boy arrived 3/4/2020
My iron is low and I start IV Iron infusion this Friday. I'm 35 weeks on Thursday and extremely nervous. Has anyone had these treatments before? If so, how did it go and what should I expect?