Do not touch the chocolate unless it is HIGHLIGHTS OR OPTIONS DRINK !!!!
Only the weak would give in because they have STS, you know you are not one of the weak.
To be STS in any week is not unusual. I stayed the same for 2 weeks and had not been off plan in anyway. I came on here just like you have and received so much help and advice that I followed, I did a fish week, and lo and behold, my weight went down by , I think it was 3 lbs, the following week.
The only difference being I didn't want to eat baddy foods. I would not have undone all my previous good work for the sake of something that at the end of the day is only going to give you a few minutes satisfaction where as your weight loss could be for life.......it is up to you.
Stay on the waggon and achieve your dream.
Good luck.