Hey, at least you found a way to cope, and it was only for a week! You can focus on eating your greens and fruits for a couple of weeks, and I am sure it will even out.
Besides... there could be other factors, too - maybe you were less hydrated last week, and more this week when you weighed, or might be a little constipated and carrying extra "weight" or maybe this was just a week your body needed to gain a little more.
I wouldn't worry about one "off" week - we all have them!
Loving being a stay at home mamma to DD 10/07, and newly arrived DS 7/26/10