I ate an undercooked hamburger it was brown on outside but pink raw in middle. will i get e. coli from this? also breastfeeding still okay?

E. Coli Burger: E. Coli does not cross in breast milk so your baby will be safe in that respect. As for yourself, while eating undercooked ground beef does raise your chance for getting an E. Coli infection, that's only if the beef you ate was actually infected with it. The chance that the beef you ate had E. Coli is around 8% so, in all liklihood, you too will be fine.