Hello , How big and fat is your frog?i have a Pacman frog that is 5 inches long and 5 inches wide when not full .she eats perhaps 1 time every month to 2 months .They will hold the food in their belly's for a long time . Do not worry if they don't use the bathroom or don't eat and they have a tendency to hibernate when it is not humid enough or a bit chilly in the tank .What have you been feeding it ?