LO keeps vomiting

***UPDATE: thank you everyone for your replies! I was so worried about him. It must have been some sort of food poisoning because he started feeling better around 4am. (Normally stomach viruses last longer and food poisoning is aggressive but it doesn’t last as long). He was able to keep some pedialyte down and finally go to bed. I think the mistake I made was giving him too much pedialyte at once. Pediatrician said to start with small sips and gradually increase as long as baby doesn’t keep throwing up***

Picked my son up at daycare and he seemed fine. Fed him dinner, bath, then bottle. Then he started vomiting before we put him to bed. A lot. But after he was done throwing up he was his normal happy self again. We all ate the same thing for dinner and the rest of the family is fine. He threw up again about 30 min after we cleaned him up and laid him down. Then a few more times but the vomit is less and less and now he is just dry heaving. It’s so sad to watch 😢.

So far I have given him 4oz of pedialyte. How much can you give a 14 month old? He seems to be keeping the pedialyte down which is good. But I’m wondering if I should alternate it with water or milk or if just pedialyte is ok?

He doesn’t have any other symptoms no diarrhea, no fever, no dizziness, breathing ok. I just don’t want him to get dehydrated I’ll probably be up all night worried