Iron infusions

Hello!!

I have been getting iron infusions for the last few weeks now. I'm gonna be going on my last 1. At first they started great, the ice craving started to fade I gained energy everything. But as of lately I just feel the same as I did before if not worse. I noticed by the time I go in for my next infusion I'm back to being pale and have 0 energy. I've also noticed my lips turn almost blue. I'm not sure what that's all about, I'm just wondering if anyone else has went through this? If so I'd like so input on your experience!! Thankyou