Could it be the yogurt?

The scale has moved down every day this week. Today I was 264.1, that means I have lost 6 pounds since Monday. The only thing I can think I have done differently was to add yogurt back in my diet. I couldn't stomach it for awhile and started eating it again this week. I got some flavor drops from Capellas and the peanut butter one makes yogurt very yummy. It taste like peanut butter pudding. I have eaten probably 3 -4 yogurts a day lately. That and I am making sure that I don't eat anymore products with sucralose in them. Whatever is causing it, I am very happy!!!