I'm a FTM and very nervous because I have no experience. My daughter is 3 and a half weeks old. Normally during the day she is awake for a few hours in between feedings and what not. Today she has literally been sleeping all day and I've done all I can think of to get her to wake up and stay awake. She has been eating thankfully but spitting alot of it back up. And my biggest concern is that she hasn't had many wet diapers today. Should I take her to the ER to have her looked at or should I just wait it out and see if it's any better tomorrow?