Pooping and peeing in the house

Question
I have a 3 year old Bull dog, which I have had for 6 months now and completely house broke. We have a doggy door which she is completely comfortable running in and out of to the back yard and has free rome inside, however all of the sudden she has started peeing and pooping in the house while were a sleep at night. No new rules no new pets or guests. Why is she doing this and what can I do to end this behavior?

Answer
When did this first begin happening, Niki? Was there a thunderstorm or fireworks or something going on outside that possibly frightened her into not wanting to go outside at night?

If it were me, I would crate her at night for a while, after making sure to take her out (on leash) right before bedtime to make sure she goes potty #1 and #2. That way, she should not soil in her crate.

If she DOES soil in her crate, then try confining her using an exercise pen (X-pen) right at the doggie door, so she only has a little bit of room inside. Do this for several weeks and then try giving her some more freedom if she does not potty on the floor during that amount of time.