I'm currently 33 weeks pregnant and anaemic which I have been since my week 12 Booking bloods. My level then was 10.2 which MW said wasn't too bad but it then dropped to 9.6 within 4 weeks and despite being on Iron tablets for about ten weeks now my level, when last checked three weeks ago, was still 9.8.
I've had my levels checked about 4 times since my 12 week bloods and my iron level has always been between 9.4 to 9.8.
At the end of April I was started on three iron tablets a day but the side effects were awful so I reduced down to two tablets a day which my GP and MW were happy with.
However, two weeks ago my Cardiologist has said that as my iron levels are still so low that I've got to back on the three tablets a day and just put up with the side effects. She has said that if by 35 weeks pregnant my levels aren't 11.2 at a minimum I will have to have an intravenous infusion of iron. She practically put the fear of God into me about that! 
So I've got more blood tests in two weeks and I'm doing EVERYTHING I can to try and increase my iron levels in terms of my diet as well as put up with the side effects of the tablets.
Has anyone else been persistently anaemic during pregnancy and had to have an infusion?
My Cardiologist has made me feel so nervous about it all 