Wow, I can relate. I had a really decadent, lazy weekend. Pizza on Friday at work, then I liked it so much on Friday I ordered it again yesterday. No exercise at all-and I had been doing great for the last couple of weeks. So this morning, I got my butt up, went to the gym and got right back on track. I know it sounds corny, but it's true that every morning we get a new chance to start living healthy.
I did WW a few years ago and I can tell you that the people there will be supportive and understanding because they have ALL been there. It's ok if you gained, use it as motivation to stay strong today! I still use the techniques I learned at WW-I started journaling again today because I've been so unconcious about the food I've been putting in my mouth.
You may not be able to see us, but know that we're all there with you in spirit.