Baby is 3 and a half weeks old and has been breast feeding really well but has just coughed loads which scared me to death and then vommed all over me and had a really horrible green stringy nappy, do they normally cough before being sick, it sounded like he was choking hence the panic. I've just googled and it said the baby might not be latched properly and is getting too much foremilk, I do feel like I'm over producing and he is struggling to latch properly because my boobs are too full for him. Any advice?