Olive pot belly peeing

Question
I adopted my potbelly girl Olive when she was 6 weeks. We had her litter trained in the beginning but as soon as we took her out she refused using her litter box. She is about 9 months now and she only has a had one span of time were she would pee inside, but as soon as she was passed that she has been extremely good about waiting to go outside. Now she seems to want to pee inside. i will take her out and she pees and poops, but then an hour later she is peeing inside again. I woke up this morning and took her out, she did her business and then she ate(this is normal routine). I laid down for another 30 min before work like I normally do, and then when i went to shower, she peed while i was showering. I had took her out 5 times yesterday and she peed and still was having accidents in the house. I had to restrict her to the room me and the roommate were hanging out for the night to keep an eye on her. I only filled her water bowl up once yesterday and she still had water left in it. I am very concerned on how she is peeing so much and wont hold it in anymore. Could a change in her diet do this? There is only one feed store i can get her feed from so i switched her to vegetables and it seemingly started around the switch.

Answer
Yes if she is eating vegetables only, no pellets, this could be a side effect. Dry pellets are, well, dry. Vegetables are juicy by comparison, and contain a lot of liquid.

Another possibility is that she is in heat. Pigs in heat often "forget" their potty training. If she is "forgetting" and peeing indoors every three weeks or so, it's heat. Getting her spayed will fix that.

Another possibility is a urinary infection. If this is the case, piggy will need to see a vet for antibiotics.