CD 17 spotting

hopeful future mama ❤️

Hello to everyone, please help this girl to figure out this unusual spotting between periods. First time experiencing something like this. We baby danced on CD 12. And spotted this at CD 17. Today is CD 18, and still noticing few drops of similar discharge from picture below. Could this be implantation?? Very confused as my cycles are usually long and this is not normal for me.

Thank you to those who helps with their opinion.