I have a 3 1/2 month adorable rottie. About 3 weeks ago she vomitied for the first time, then again 2 days later. We thought it was not anything serious, maybe she ate something outside. Yet still concerned. This week, Saturday she did it again and then again Monday. It always happens at night. And the thing is, it wakes her up. She was sleeping previously all 4 times. If I bring her to the vet, i'm not sure what they can or would do. Can anyone offer advice or expierence. thanks.