I know I should be an expert by now as this is my third (fourth pregnancy) but with the first I didn't get any sickness, the second a vague feeling of sickness, and the third, as far as I remember, a fairly constant feeling of sickness until about 12 weeks. I am nearly six weeks at the moment and the last two days I have felt pretty bad, sicky all day but with that weird hungry-but-want-to-be-sick feeling around tea time. Today I have felt absolutely fine. Is this normal? Does it come in waves day by day?