Hi
I've recently put my 4 month old dd onto formula (a heartbreaking decision but one that had to be done) she took a few days to get into it - the last 3 days she's taken her bottles no prob she usually has 5 bottles in 24 hours of around 180 - 200 ml each, but today she's just flat out refusing to take anything! she just screams and arches her back and turns away. she hasn't got a temp and is generally happy but has only had approx 300 ml since 5am - its now 3.30. When should I start to get really worried?