Anyone go a week into diet & stomach looks bigger?

It could also have to do with the foods you eat. A lot of healthy fruits and vegetables will make you seem bloated in the short term, despite the fact they will actually help you lose weight over time. As someone else said, water weight can play a role as well. I'd say don't even think about it after a week. If it's the same situation in three months, then reevaluate.