I'm a first time mum and My LO is 4 weeks and 5 days and bottle fed (formula). About 4 days ago she started vomiting after her feeds. Sometimes it's a lot and sometimes it's just spit up. She doesn't really cry or seem In pain so I'm not sure if it's reflux or not. I'm now panicking she's going to throw up in her sleep and choke as she is so quiet when it happens! it can sometimes be an hour afterwards. The strange thing is her 3am feed (which I do as the OH works) she hasn't yet brought it up as far as I can tell. After each feed I sit her upright for 30 mins too! Any help would be great!