Why is she acting like this all of a sudden?

I've been dating this girl for about 2 weeks and we were getting along so well. She has suddenly started blowing me off but not giving any hints that's she's no longer interested. My friend said she's probably just testing me to see if I am going to pester her & probably just wants to let me know that she has her own life. A little help here please! Should I wait & see or just move on?