K.T.
My daughter did that as well. It went back to normal after a while. You need to let her cry it out and she will get used to it. Does she sleep in your room?? If you keep going in there she will get used to that and she will continue to do it. It is like letting her sleep in the bed with her. Every once it a while is OK but if you continue you are starting a bad habit. I don't want you to think that I am preaching...I know everyone gives that kind of advice and I hated it too, because I am not you (and the people that advise me aren't me:))...I have just had to break my DD of that habit several times! That is harder than what she is doing now!! Their sleep pattern messes up when they are near a big milestone or a growth spirt. I hope this helps!!