Hi Georgigirl - It's so good to read that you found a doctor who took a genuine interest and looked at what "could" be done for you rather than what "couldnt" be done, which is what so many doctors appear to do today.
I too went the iron injection route and i never throught they would work, but after my 4th injection i began realising that i wasnt as tired as i used to be. I don't even want to sleep in anymore and am doing some light exercises at home in the morning before breakfast as my specialist always says that it's vital to keep the metabolic fires burning and to do some form of exercise which raises the heart rate.
I had my 5th and last injection on 14 August and will now have a blood test soon to see where i'm at. My doctor didn't even question it. I simply told him that my specialist wants me to have them and he wrote me a script. My specialist, who happens to be a Trichologist (hair/scalp specialist) has now asked if it's ok for him to send other patients of his to my gp for their iron injections as their gp's refuse to administer these injections.
If you don't feel any better after the first few injections, dont panic, some people dont feel much better till after the last injection, but then others will feel the benefits after the first injection. We're all individual and i guess it depends on how depleted you are of ferretin as to how soon you will feel the benefits. I was also told to be patient as the iron goes first to certain parts of the body eg: bone marrow and muscles, while our energy levels, hair/skin/nails get it last and get what's left.
Best of luck with your progress