Implantation bleeding?

Leslee • TTC Baby#1 Married 02/04/17 Baby Dust✨
Okay girl I need some help. I just went to use the restroom and when I wiped there was a pinkish/brown color on the toilet paper I'm not suppose to start my period until January 18th. My fiancé and I baby danced December 30th. Could this be implantation bleeding? If so how long should I wait to take a pregnancy test