So my baby has been throwing up since 2 this morning. Can’t even keep water down. She has no fever…

So my baby has been throwing up since 2 this morning. Can’t even keep water down. She has no fever and is acting like her normal self. Part of me wants to take her the ER, but then I don’t wanna take her cause they probably won’t do anything and tell me to just let whatever it is to run it’s course. Ughhh stuck on what to do.