I pumped 6oz yesterday am then poured it into a sterilised CTN bottle with the teat and lid on (the avent bottles I have arent BPA free so I figure the risk is less if the milk's only in contact with it for a wee while) Its at the back of the top shelf of my fridge, will it be ok to use tomorrow afternoon? That would mean it'd been in the fridge for a little over 48 hours Or does it need to be in a bottle with a sealing disk type thing? I dont really get how its not ok to use a bottle that was sterilised over 24 hours ago but its ok to keep milk in the fridge for up to 5 days. I'm easily confused!!