Hi- my daughter suffers from what we call post not pre-mt. She is ill for up to a week (but can be longer) with tiredness, nausea and headaches. She has had blood tests so is not low in iron. It has happened after her period every month for at least 4 months and perhaps on and off for the last year. Has anyone else experienced this and any advice, thanks. She is fed up of being ill, its affecting her school work and also her social life..