Baby throw up FTM

Ti

My newborn throws up one to two times a day and before when we just took her home she started throwing up yellow... we took her to different doctors and they all said the same thing that she’s fine and she’s not sick. Recently she’s been doing a lot better. Her throw up is white and only sometimes it’s yellow. But I feel like she’s super sensitive to the temperature of the house. Whenever it’s a little chilly she’ll sneeze and get the hiccups and sometimes throw up... is it possible or am I just being crazy