My daughter is almost four months old. She has been vomiting a lot for the last 12 hours. My husband had a stomach bug and she seems to have caught it. I have heard that you do not need to go to the doc unless she seems dehydrated. She is still bf'ing and a couple of times she hasnt vomited. She doesnt show any signs of dehydration. Should I just keep trying to feed her when she acts hungry? She still smiles and seems okay. She gets really tired after vomiting and naps.