He'll drink it but it comes back up ... help please

My 10 month old started throwing up Saturday night. 3 times on Sunday and once early this morning. Sunday he only had 2 wet diapers that wasnt even full but he is drinking water, he will not drink pedialyte. He had 1 4oz gerber yesterday in portions throughout the day. Drank his formula fine when he woke up yesterday. And I thought he was doing fine throughout the day. Was drooling enough had wet diapers not as much as usual and he had a dirty diaper too. But this morning idk what happened. He doesn't have a fever so I am not give meds. We are out of town in another state so idk where to taking him that's if he needs to be seen.