Does this look like implantation?

Lea

Does it look like i implanted on8dpo? Not sure if it’s 8dpo or technically 7, this chart is going on ovulation day of cd15 based on peak opk. It couldn’t detect ovulation based on temp because I started taking progesterone the day I got my peak and I guess that can screw up your temps. I stopped taking it Saturday and there was a temp dip the next day but idk if that’s possibly implantation or because of stopping the med. if it’s implantation, how long would it be before a positive showed up?