Sophie has been potty trained since April and now all of a sudden is peeing and pooing on the rugs in the house! She is trained to potty on pee pads and for the last week or so she's been peeing and pooing on the pads only sometimes and on the rugs. I have racked my brain to try to figure out why she is doing this but can't figure it out. Nothing has changed in the house and our routine is the same. Maybe someone here can give me some advice?