I just talked to my mom about it...the baby has a lot of belly problems as it is..along with bad GERD...I remember while I was cleaning up last night...nothing ever smelled like vomit. I asked my husband and I wont be too graphic, but it was undigested....so that leads me to believe it was just what I gave her last night...WHICH makes me feel 10x worse bc I gave her something to eat too late and she got sick bc of it...bleh