So I am currently 13dpo with AF not due tomorrow (the 18th). This morning I went to the bathroom and looked down and I had a tiny speck (like the size of the writing end of an ink pen) of red on my undies surrounded by dried CM. Anyone think this could be implantation or is it too small to be that? I didn't have anything when I wiped except for CM. And no, I have not tested yet because I'm actually traveling right now and I honestly want to wait to see if AF rears her head before I POAS.