Don't worry Pizzle, I'm in week 19 and often have tummy rumblings. I drink 4L+ a day and food doesn't bother me at all but my tum still rumbles, is at the moment - though that maybe coz I'm yet to have my first shake!
Like Spore I usually have a black coffee if it is later in the day. In the morning I try not to have my first shake until I have had a bottle of water, which I've nearly finished now.
x