Can Implantation bleeding occur as late as 14 dpo??

Honey • 29• mom to Hayden and Hazel❤️

I am 15dpo today and AF is not showing up but I am having this brown discharge from yesterday. Only when I wipe. We are 1st month TTC and had BD every other day during my fertile window. So is there any chances of having an IM this late? I’m having baby fever soo badly😭😭😭