3 year old pom started pooping and peeing inside after being potty trained for years

I am at my wit's end right now.

My pomeranian turned 3 in September. We got him when he was 3 months old and potty training was a breeze with him. He picked it up so fast and never had an incident inside until around August 2025. He had a little incident in the upstairs bedroom with an upset tummy. We cleaned with enzyme spray but he continued to poop up there almost everyday. He also started eating it for some reason.

We started taking him out more often and giving him treats when he pooped outside but it didn't help. He hardly ever even tells us he needs to go out anymore, when he used to run to the door and/or bark. He kept choosing the same spot on the carpet upstairs, so we put a baby gate up. This helped for a few weeks, but if we even left the door open for literally seconds, he'd run up there to poop.

Then he started pooping downstairs. We have hardwood downstairs, and we still clean with enzyme spray, but he keeps doing it. We had to throw away all our rugs. We started feeding him pumpkin to hopefully get him to stop eating it at least, and that doesn't work. He poops inside when we are home, when we aren't home, it doesn't matter. He doesn't act guilty (but we never use punish for training) so I don't even know if he knows it is wrong, despite rewarding him for going outside.

This morning, he pooped AND peed inside. The pee is a new development I'm pretty sure.

We moved to this house in Jan 2025 but he had been doing great with giving cues to go outside and going outside up until August.

We try to take him out like once an hour or more. Sometimes he will spend 15-20 minutes sniffing but not go outside, only to immediately go inside.

His farts have also been extra stinky lately… but that may be the pumpkin. He had a stool test a couple months ago that was negative for everything.

I have a vet visit coming up soon but WTF? He is a great dog in every other way, but this is driving me bonkers! Does anyone have any clue on what we can try next?

submitted by /u/thereaintshitcaptain
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