Confused with my vagina.

Okay so I know it’s a long shot but...

5 days after my period ended, I got brown discharge. I figured it was just left over blood and no big deal. It lasted for 3 days and would be (what I consider) a light flow. Not quite spotting but light. It lasted 3 days. Now about a day after it stoped, I have a very light pink bleeding. It looks like what could be implantation bleeding from what I have seen on this app. But I couldn’t be pregnant if I just had a “second period”, could I? Any ideas at all? Last tome I had sex was 8 days ago.