My newborn has a hoarse voice. She is 6 weeks old. She started to have it a little yesterday, but today it sounds more hoarse. She slept very little last night, spat up a few times, and vomited once. Im currently breastfeeding. She has no fever. Today she hasnt slept as much as normal. I also noticed when she feeds, she gets fustrated sometimes and coughs/chokes on the milk... but i think that may be to the flow of milk while nursing and she is laying flat, so now i prop her up while im nursing. Im so worried! What could this be and what causes/treatments are there?