Hello everybody. Does anybody know why I might have a constant headache at 23 weeks pregnant? Paracetomol doesn't seem to touch it, it's so constant that I even have it in my sleep if you know what I mean. I saw the midwife two days ago, and blood pressure was fine, no other problems. The only thing is my iron - I looked in my file and when I had the booking in bloods it was 11.9, so near the bottom of the 'acceptable' range. Could that be it? If so, how long does spatone take to work? I feel a bit sick too and VERY tired by about 4pm every day, could happily go to bed then, but think it's the headache causing that perhaps. Thanks!