I'm 18+5. My iron levels at 12+ weeks were 8.8 (I had been taking 200mg iron a day up to then). So I was then taking 600mg a day. My iron levels at 17+ weeks were 9.2. Then this week I got a letter saying because it hadn't improved much I have to see a consultant in haematology in a couple of weeks.
In my last pregnancy my iron levels were between 9-10.5 throughout, until reaching 11 at the very very end. No one fussed about it then, just told me to keep on the iron tablets.
FWIW my iron levels are always low so it doesn't seem much of a big deal for me.
Why the big hoo haa about it this time? Someone please enlighten me!