Mix 1/4 cup water with cornstarch in measuring cup. Heat blueberries in medium saucepan with sugar, remaining water and lemon juice. Add the cornstarch and water mixture. Mix and cook until thickened. Take off heat and cool.
Mix yogurt, cream cheese, lemon juice and sugar in mixing bowl with hand mixer until no lumps remain.
Layer pops and freeze one hour and then add the sticks, freeze until solid (around 4 hours or so).