TMI: How light/dark was your implantation bleeding?

Ok so Im a bit lost here. Before yesterday I saw discharge I haven’t seen before it was light pink and something I don’t usually see before a period. Picture attached:

And ever since I thought I got my period because it started getting darker, but its not a heavy period blood flow, its hard to describe. I dont feel like Im on my period tbh, I dont feel the usually period like symptoms if that makes sense. This is odd.. and I tested today it was negative, Im going to wait a bit to retest and see if this flow continues this way. Any advice would be kindly appreciated 🙏