Ttc, af due tomorrow. No signs yet.. who else is with me?

Lana
So af is due tomorrow, ttc baby number 2. Had eptopic last year and mc previous year. Today i had more EWCM but im due my af today or tomorrow. Went to the docs on thursday and got bfn today is saturday. Why am i having more signs of ewcm if af is due today or tomorrow. Anybody else had this happen to them?