As M said the headaches are quite normal although mine were really bad the first time I did the milk diet. I saw the dietician the other day as you know and in the first few days it is clear liquids only for me water, no sugar squash, stock cube. Then progress on to soup with no bits in, milk all those sorts of things will try and find time tonight to give more detail but need to go to work now. Will try and come on later. Take care and I hope you feel a little better today.