Had iron infusion and blood test showed levels went down--anyone?

Hi all: had my first iron transfusion two weeks ago (one vile of iron). Had blood test eater day and it showed my hemoglobin etc went down. Not what I was expecting...anyone had this happen? 

From what I know it takes 6-12 weeks for the levels to show improvement.  My doctor told me I would start to feel better after about 2 weeks though.  I also had 2 infusions each one week apart so you may need to have another infusion done to help your levels.  

Thank you so much for your helpful and quick reply. That is what I thought and I am sure my doctor will confirm that on Monday. Your post helped me and I thank you for that! Have a great weekend.