Weight loss stalled this week

Options
I have had a couple high sodium days this week and today I weighed 2 pounds heavier than on Monday. Does anyone know how long it will take to lose the water weight from the high sodium days? It was high for probably 3 days in a row. All I drink is water and it's usually 70oz. a day. Before this week, I had been steadily loosing 1-1.5 pounds per week. This week, I'm showing a gain as of right now. It's very discouraging.