Late period with BFN

Shonali

My periods were supposed to show on Monday (26dec)

But it is Thursday today - No sign of period

I tested on Sunday and Wednesday ( both clear negative )

Before the date of my period - i got very dark brown spotting on Thrusday (22dec ) to Saturday (24dec)

Today ( 29Dec ) i just saw

My discharge is White _ Sticky

Just feeling little pinching cramps sometimes and bloated with nausea

Please help - Am i Pregnant? Or What is this