Just a heads up. I've been feeling pretty shit for weeks. At my 28 week appointment the midwife did normal bloods, and my haemoglobin levels came back fine, so they didn't think there was a problem. At my 34 week appointment yesterday I told her I was still feeling shockingly tired, so she did bloods again but sent them to be tested for haemoglobin (iron in the blood) AND ferritin (iron stores). Haemoglobin once again came back fine but my ferritin stores are low, so they're giving me iron supplements.
I didn't realise before that there were two things they could test for re iron, so when they said my haemoglobin levels were fine I didn't know to push for more. I just wanted to post this to make everyone aware that it's worth pushing for more tests, or for your ferritin levels to be checked as well as haemoglobin, if you're feeling ridiculously tired/rundown/foggy.