Implantation/missed period

Someone help me 😂

I believe I am 13dpo today, my period is due tomorrow. On Friday I started having pink streaked CM, very very light. Spotted it maybe 3 times over the weekend. Yesterday morning (Monday) I wiped and there was way more, how my period would normally start so I put a tampon in and got on with my day (albeit pissed off). I didn’t change it till the evening (normally I use 2/3 a day) and when I did it was maybe half covered, all brown. Since then I’ve had nothing, not a streak. Still testing negative this evening.

Am I out and clinging on to false hope? Is there a chance I could still be pregnant? Seems late for implantation bleeding and I would expect a positive by now?

And if this was my shortest and lightest cycle EVER, what does this mean for this next month TTC? Could it effect it?