I do remember my mother telling me that when I got mine they gave her the choice of my getting it on my leg since I was a girl - meaning it wouldn't be visible on my arm, so that's what she did. 
And I can identify with the anemia, back in the '90s I was severely anemic and I regularly saw a hematologist. He put me on an iron supplement - ferrous fumarate - since that's the most easily absorbed. I had to take 16 pills a day to get them all in and I had to take them on an empty stomach. I'd take them 4 at a time. To this day it's affected my eating, I don't eat very often during the day. And I know what it's like to be anemic, low energy and I slept a lot. I actually have a similar issue now, low thyroid, which can sap your energy, too. And I also use an inhaler. 
Let me know how it goes. I've been there and apparently I'm back there again. 
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