Anyone in the same boat?

Options
This is my third full week of doing MFP, and I love it! However, the first two weeks I lost a pound, and just weighed this week- no difference. I have been lifting weights along with cardio and realize that can add weight, but it is still depressing! I was just wondering if there is anyone similar to my height (5'5 and 135 lbs) that experienced this. How soon can I expect some weight loss while lifting weights? Or is it more likely my diet that needs to be adjusted? Appreciate your feedback!