Hiya Rawdiva! I found day 5 hard too - was absolutely shattered and felt like I had the flu - but woke up on day 6 much happier - so hang in there, babe! You've done the hardest bit now - only a couple of days before your first weigh-in.
Stay strong folks. Up and down days will come and go but one thing is certain, the weight will keep dropping off at about a stone a month. Your first weigh in will really spur you on. So keep at it, you will do this!!!!