vomiting once a day

Hi everyone,
We are away on holiday at the moment and since the day after we got here my 9 month old has been vomiting once a day, with the exception of the first day where ne vomited two or three times. We are concerned as he has never done this before. These are big spews that go everywhere, not just little spit ups.

We are holidaying in christchurch so no where exotic that would make him sick! The people we are staying with have a cat, but that wouldnt make him sick would it?
Apart from when he is vomiting he is his happy self with no other symptoms. He is not getting dehydrated as he is still eating and drinking nis milk. The only other difference is that he has had alot of jar food since we have been away, whereas at home we make 80 percent of his food. But he hasnt eaten any new foods

Has anyone experienced anything like this, or have any ideas what could be causing it? It seems weird that it only happens once a day, usually in the afternoon. Thanks so much for any advice

Edited by hayley1

Its just vomit at the moment. Im hesitant to take him to the doctors because i doubt they will do much. Might just be a case of waiting it out maybe

I'd probably take him to the Dr, since it's free anyway (or pretty minimally expensive) just in case they have any ideas. It does seem possible it could be linked to the formula - you could perhaps try him back on his regular kind for a couple of days?