Yep what Kirsty said, don't give up!! I had an unexpected gain before and it had me off track for weeks!
You had a great week last week so even though it (very disappointingly) didn't show today, keep it up and it will next week.
I'm trying to think off all the things I've heard in group when people have gained.
- water retention?
- star week?
- drinking enough through the week?
- eating enough through the week?
- could try more speed/ superspeed/superfree foods? (although you do eat healthily as it is.)
- could it be last weekend catching up? sometimes our weight loss is a week behind so keep it up and this week will show next week. (I don't really think it is this though as apparently it takes 3,500 excess calories to gain a pound, if this is true then there is no way you should have a 3 lb gain!!)
My C says plenty of times that women should average our weight loss out over 4 weeks due to the way our bodies work.