Milk and vomiting?

[hfitz5051]

I recently switched Hazel to cow'm milk(from formula) Well, the other day she threw up twice, this was a few days into the switch, so I gave her some of this other formula I had here(for older babies) and milk too. Once that was gone I went back to all milk and tonight she threw up again. Is she maybe just drinking too much? Both times was after she ate(lunch/dinner) and then wanted milk. But it was *gross tmi* chunky curdled milk looking.