I would definitely recommend the white coat visit, but knowing what I know about kitties vomiting, I would try 1/4 of a Pepcid until she gets her in. This helped Tubby immensely. And I know Pepcids are tiny pills to begin with, and cutting that teeny thing into 4 isn't that easy, but it's important to cut it because kitties can't take the same doses we 2 leggers can.

Disclaimer though, this is only teimporary until she can get the kitty to the white coats, because kitty definitely needs to be checked.

Good luck and please keep us updated on Ipo's vet results.