Hun, I've read through some of your previous posts and you've had some ups and downs - wasn't it your birthday a couple of weeks back and the office has been full of treats etc?
To STS for 2 weeks and then gain a pound something has got to be wrong. Whether it's too many syns, not enough free foods, not counting things, not weighing HEX's, something is creeping in.
You said you thought you had a good week - did you? Where you 100% on plan?
Maybe start afresh and post a food diary as the week goes on, write everything down and count all syns.