Good luck on your exante journey Irishlass, I am on day 3 now and if you find you're struggling later today or tomorrow I just want to say it does get easier. I agree with frenchfancy, try and keep busy and drink your water, it really helps.
I actually found myself thinking "are you really going to eat ALL of that?" as I put a portion of food in front of hubbie that I would have thought "is that all you're having?" a few weeks ago!!! Who'd have thought it! Lol!