My daughter is 1 month and 4 days old. I am a new mother. She has never really been one to spit up alot, but for the past 3 days she spits up quite often. She can be laying in her bed sleeping and she will just spit up. She is also fussyier than normal She doesn t have a fever. We had to switch her formula from simlic advanced to simlic sensetive soy. Our doctor is aware of this change. She has been fine until now. What is likely causing this and what should I do? Should I take her to the er or deal with this at home?