Hi Sarah, sounds like you must be in ketosis if you don't feel hungry. I'm like that now, have to remind myself to have my shakes, but it is really important to have all three every day to make sure you get all the vitamins and minerals you need.
The normal signs of ketosis are not feeling hungry, getting an energy boost, and smelly breath (doesn't last though, hooray).
Well done for getting this far, hope your first weigh in is a good one!