my toddler 2 year (will be 3 in January) did not have much of an appetite yesterday and vomitted three times and tired and had loose stool that was light in color, more like a grey mushy consistency three times with the last 24 hours.  Is this a virus?
after going through your case this is mostly a viral diarrhea. This diarrhea doesn't need any specific medication but need supportive management. Give your baby antacid like lansoprazole and anti-vomiting medicine like ondansetron according to his weight. After half an hour give him something to Chat Doctor.  If he doesn't vomit then good but if he vomits persistently then please consult a pediatrician. Give him 10 ml per kg of ORS after every loose motion. He may also need zinc supplements, probiotics etc. Watch for following -1] Large watery loose motions with mucus or blood in it.2] Persistent vomiting.3] Not passing urine adequately. [this could be sign of deny