Spotting or Implantation?

I got the Paragard last Tuesday (the 7th) which was also on the last day of my period. I had sex like two days after lol 😅 for until 3 days ago I had dark brown discharge/spotting, and now it’s been light brown. After I wipe using the bathroom my thing (idk if it’s spotting or..?) looks like this, but throughout the day it’s light brown discharge on my pantyliner. I’m pretty sure I’m not pregnant, but what do you guys think? It’s only been a week since I got the IUD