probably just a dream. you could bless and/or purify the dream catcher with a sage smudge stick. also, where exactly is the dream catcher? i've always been told it must be placed near the head of your bed beside a window [or at least somewhere where the morning light will touch it] because dreams will go through the web of the catcher to get to you, and bad dreams will get stuck, being destroyed by the morning light.
another thing you could look into is you routine before bed, what you watch, eat, do can effect your dreams. like when you were thinking about your lest holiday, you can tell yourself to dream of things sometimes, takes practice, but it works. also, certain foods can effect your dreams, my friend will eat cheese before bed if she wants extremely vivid dreams. myself, if i eat cheese before bed, it result in the worse nightmares i've ever experienced. same goes with smell, i have a friend who uses a few drops of peppermint on her pillow when she wants a restless, seemingly dreamless, night, while another friend uses peppermint when he wants prophetic dreams.
try the blessing/purification, if it doesn't work, try making another one. not too sure if it should be made in a certain moon phase or not, i'll ask my friend next time i see her.