Help me please

I took butters to work and he was doing great! then when i get him out of his kennel to go home, he had PEED HIMSELF?? he has never done that. he was laying down asleep with pre on him. he seemed so tired and didn’t wanna walk. he was shaking and wobbly. i took him home assuming he was just being dramatic . but still worried because it’s odd for him to pee like that. I woke up rightnow and he’s PEED AGAIN ! he’s peeing himself in his sleep . he’s refusing to eat or drink.

Is this signs of SM?