Crazy4carbs,
The others are right about treating yourself. The only big problem with the chinese is that you really have to watch what day you are eating it. Chinese food has A LOT of salt in it. You will probably see the scale go up as much as 5 lbs when you eat it. But don't worry it is only water weight. You can drink tons of water the next day and get back down.
As for what day to eat it being the best I would say the day after weigh in. That way if you eat healthy the rest of the week and keep up your exercise you can still come in with a loss for the week. You have to treat yourself sometime. This is a lifestyle change and it is for life.
I always gain 5 lbs when I eat chinese every time. I try not to have it to often because of that. But boy is it good.
I hope this helped you.
Sherri