My son has had episodes of recurrent, intermittent
vomiting going back 5-6 months. He will vomit 1-3 times a day for 3-7 days in a row, and then be totally fine for weeks, until the cycle repeats. When he is ill, he is a little less energetic, a little less hungry, but still poops and pees well, still happy, no change in level of conciousness, and no pain.
We consulted with a GI Dr, who drew some blood in early December.