DD is 7 and a half months old and today she has been having little spews. Tonight though she has done 3 big vomits! She was heaving and gagging aswell. Her temperature is fine and she is happy in herself, she is now asleep. This happened about a month ago and I was really worried so I rushed her to the ER but they said it can just happen sometimes. Anyone else experienced this? Should I be seriously concerned?