I've recently been weaning my 9 month old off BF and been giving her Aptamil No.3 from the ready made cartons. A couple of days ago I started using the powder stuff and since then she has vomited a couple of times. The only difference in her diet is the use of powder Aptamil from time to time. I use the cartons when we're out and about and I'm still breast-feeding the morning feed. She could have caught a little bug or something but she seems fine apart from the fact that she is teething like crazy. Has anyone else experienced this?