8 days late, no sign of period.

Katrina
So I'm not 8 days late for my period. Had this white milky sticky discharge for about a week and a half-2 weeks now. I have NO sign of my period. At all. And I'm never late. I have taken 4 test, all have come out negative. And I'm pretty sure it's not early to test? Like if I'm getting a negative after 8 days past my misse dperiod then it would come out positive by now if i was pregnant right? Here's the most recent test taken yesterday morning so unless somebody else sees something, it's a flat out negative. But why is my period this late with a few symptoms..? PELASE HELP.