Implantation?!

Hi guys okay need some help here. Woke up 11 DPO, took a test and BFN so disappointed! And I looked so hard for a line... nothin. I mean I had a feeling it would be I had no symptoms except for my skin being super clear and let me tell you if AF is around the corner I am anything but clear. Then today at 1pm when I got home I went to the bathroom and wiped

and got this...

It is the tiniest amount of blood I have ever seen. And these girl who show their implantation pics it's way more than that! Could this be implantation bleed?👆

I woke up with a headache, I have been nauseous all day, take a bite of food and it's like nope nope nope.. don't do that again. Ridiculously tired. Just all these random things I don't normally experience. AF due on Monday the 23rd.

And another question if I'm in fact implanting on 11 DPO then when would I get a BFP

Because I have a son and wasn't sure if I was off on when I was supposed to start my period because according to my app I was 8 days late before my BFP. Thought it was a random fluke but could that have been from late implantation?