i'm two days late on my period and having no signs of belly aches or feeling sick

Hi everyone , 

im two days late on my period and no sign of belly aches or feeling sick as usual and just before I wiped and it was like see through discharge and pink bits in it very light and now it's disappeared ! 

Im going to wait until tomorrow to see if my period comes , but what would you all suggest that's wrong ?

i was thinking maybe implantation but that would happen before due period surely ? 

Thankyou