Hi, our 18 months son fell off the bed on a ceramic tile floor at a resort in Mexico. Then he vomited twice a few seconds apart about 5-10 minutes after the fall. The doctor at the resort sent us to the emergency room where they did a CAT scan and found no problems. We went back to the place, he took a nap, looked quite fine and happy all along. But an hour ago he vomited again, projectile vomiting, and this was about 9 hours after the fall. The doctor came to see him again and suggested to keep watching for the symptoms of concussion, but was not very concerned as the scan did not show abnormalities. There is also a consideration for some sort of gastrointestinal bugs, we are watching for those too. Any suggestions to this? Is there anything we are possibly missing? Thanks for any thoughts