😳 Is it possible to get Implantation bleeding at 16dpo?

Momma
Help! I'm so confused. I missed my period yesterday, BFN, and saw a little pink tint on my tp this morning. Thought I started my period, but hours later there was only a small streak on my tampon. Not at all like my period. Is it possible to get implantion bleeding after AF is due? Been having cramps for the past few days.