My dog is a dachshund 1.5 years old. In the past month she has vomited around 5 times. When she does it's a yellowish liquid and maybe some hair she swallowed. She never throws up food. She eats, drinks, poops, sleeps, plays normally. Do you think I should take her to the vet? My BF thinks she's fine and says it's prob because she picked stuff off the floor. A couple of months she had colitis and the vet took xrays to make sure she didn't have anything stuck in her system. If she had something serious like cancer (omg please no) they would have caught it then right? So is it me? I'm the type to take her to the doc for anything but it's pretty expensive. Please help!