I just spent about an hour writing a post here and I just lost it
Holistic medicine is great and wonderful but there are times when the first thing you need is conventional medicine, then you can complement it with any type of holistic medicine, if you wish.
Really, I think you should just go directly to a hospital.
There are so many possible causes for your childs illness, he needs to get some tests done.
Take a look at this:
Nausea and Vomiting
Nausea is an unpleasant feeling that may include dizziness, vague discomfort in the abdomen, an unwillingness to eat, and a sensation of needing to vomit. Vomiting is the forceful contraction of the stomach that propels its contents up the esophagus and out through the mouth. Vomiting serves to empty the stomach of its contents and often makes a person with nausea feel considerably better, at least temporarily. Vomiting is not the same as regurgitation, which is the spitting up of stomach contents without forceful abdominal contractions and nausea.
Frequent vomiting can cause dehydration and electrolyte abnormalities; newborns and infants are particularly susceptible to these complications.
Causes
Nausea and vomiting result when the vomiting center in the brain is activated. These symptoms commonly occur with any dysfunction of the digestive tract but are particularly common with gastroenteritis and bowel obstruction. Obstruction of the intestine causes vomiting because food and fluids back up into the stomach from the blockage. The vomiting center also can be activated by certain brain disorders, including infections (such as meningitis and encephalitis), brain tumors, and migraines.
The balance organs of the inner ear (vestibular apparatus) are connected to the vomiting center. This connection is why some people become nauseated by the movement of a boat, car, or airplane and by certain disorders of the inner ear (such as labyrinthitis and positional vertigo).
Evaluation
Otherwise healthy adults and older children who have only a few episodes of vomiting (with or without diarrhea) and no other symptoms may not require evaluation. Young children and older people, and those in whom vomiting lasts more than 1 day or who have any other symptoms, particularly abdominal pain, headache, weakness, or confusion, are evaluated by the doctor. If the person's symptoms and physical examination show no signs of dehydration or serious underlying illness, doctors may not perform any testing. Women of childbearing age may receive a pregnancy test. In others, blood tests may be obtained to look for signs of dehydration or abnormal electrolyte levels. If bowel obstruction is suspected, x-rays are obtained.
Treatment
Specific conditions are treated. If there is no serious underlying disorder and the person is not dehydrated, small amounts of clear liquids may be given an hour or so after the last bout of vomiting. If these liquids are tolerated, the amounts are increased gradually. When these increases are tolerated, the person may resume eating normal foods. If the person is dehydrated and can tolerate some liquids by mouth, doctors usually recommend oral rehydration solutions. Those with significant dehydration or electrolyte abnormalities and those who cannot tolerate liquids by mouth usually require intravenous fluids.
With the symptoms you gave I believe your child could be showing dehydration signs.
If I was in your condition I would take him to the hospital, without delay!
I don't think they'll deny seeing him, if you have to exagerate a little don't hesitate. Like his not being very active, he's very drowsy, without energy, spits up everything, push it so they check him up.
Please, give us feedback on your situation.