...thought I'd chime in here. You may be dealing with "diet induced adaptive thermogenesis". Google it if you need further details, but pretty much over the short period your body has adapted the change and, hence, no weight loss. I'd keep at it and adopt some of the suggestions posted: water retention, sodium intake, portion sizes etc.

About myself, in Jan 2010, I weighed 314lbs+, dropped down to 238lbs during the summer of 2010 and currently fighting my way forward from a winter high of 252lbs. What worked for me is daily exercise and logging my calories (on my phone-I've used both the LiveStrong and "LoseIt" apps). I gain weight when I drink beer and eat a weekly diet high in carbs: pastas, pizzas, bagels, all the good stuff. 2lbs is nothing to worry about. Keep your head up.

Good onya for the jump start. I am certain if you set a longer goal, like a 6 week goal of 10lbs, you will be surprised at what you accomplish.