Early Period or Possible Implantation?

Imani
so dear AF is due tomorrow but today I decided to insert some tissue up there to check there it was bright pink then I put on a tampon and took it out it was a little bit then I tried tissue again nothing ! no cramping wondering will she make her full visit tomorrow ; had some symptoms today sore boobs like painful stabbing while the Tampon was inside which isn't normal for me at all any thoughts?