My 4pound Yorky went outside this morning when we work up. Maybe 5 minutes. Now she's in and can't stop throwing up. She was shaking like shivering also. Is there a vet open today? She seems to be doing better now. She's very tired from throwing up for about 45 minutes I would say. It was just clear, and somewhat foamy like spit. She did have the energy to jump off couch and up onto my chair to lay next to me. We are waiting a bit to see how she does. What did my little girl get into outside?