Thank you all for your condolences
Woog was a very happy piggy, even to the day she passed. She wasn't suffering at all. On the day she died, she was still acting like her usual self, except for being more tired. Then her legs all gave out, so I rushed her to the vet. She slept for most of the car ride, except for when she tried to groom herself and got annoyed she couldn't get up. At the vet, waiting in the room, Woog passed away. She was about 4 and a half years old.