Bella had her second puppy combo vaccine today at 10 weeks old, and she's been acting a little "off" ever since. She's normally incredibly hyper and wanting to play constantly, but she's been sleepy most of the day, and much quieter even when she's awake. She also pottied in the house twice without even whining to go out, which is very unusual for her, and peed in her crate, which she's never done. She's eating and drinking okay, and she will play if I initiate it, but she just seems incredibly low-key... which I wouldn't mind, if I weren't worried about her! :)
She checked out just fine at the vet's, and had a clear fecal, so could all of this be a side effect of the vaccine?