Good luck, GallopingFeet! And congratulations to those with wriggling beans on their scans 
Re appetite, I'm just constantly hungry, except first thing in the morning when I can't face food at all. I have constant, low-level nausea which is only held at bay by carbs. I will have to start watching what I eat more, otherwise I will balloon! 
My skin's rubbish too, and I'm sure it's partly due to my crappy early pregnancy diet.
We're telling DD that she's going to be a big sister this weekend, I'm so excited! It's early, and we were going to wait until the scan, but we think it will be so lovely for her to tell her cousins herself, all of whom she's seeing in the next two weeks while she's off nursery.