15dpiui, No AF & BFN

Today I am 15dpiui. No sign of AF and tested negitive yesterday with FMU. On 13dpiui I had light pink spotting but only when o wiped, I expected AF but she never came and the spotting stopped the very same day. I'm am not trying to get my hopes up and I would call my RE but they are closed today. Any advice or experience is welcomed.