Shorty Is Not Feeling Well Today

I'm not sure what's going on with my little Shorty dog...he seems like he has eaten something that didn't agree with his stomach, and I am wondering if he somehow got a bit of food morsel that might have dropped on the floor somewhere, or perhaps he just ate something off the carpet, or what? I don't know....but he has been upchucking just a bit...not alot, and his poo has been a bit runny.  When I came home from work this afternoon, he came to greet me and he was walking a bit wobbly, so I am wondering if he was coming out of a seizure or something but after a few minutes of my holding him, he seemed much better.  He is laying around on the couch, getting up only when he feels like it and I am just watching him to see how things go. He's very alert and he seems okay now...  I guess I will have to keep my eye on him to see how he feels later. Poor doggie...he's such a sweetie and I don't like it when my chis aren't feeling good.