Spotting for three days then nothing

I was spotting for 3 days pink and brown not red.

10/9: I think I ovulated

10/24: started spotting pink or brown

10/25: spotting

10/26: spotting got a positive pregnancy test but I think it was a fluke. Took a first response and it was negative.

Took a cheapy today and it was negative. I don’t know what to think so confused. Anyone experience this? I have never had implantation bleeding so don’t know if this is it or possible something else. Has anyone experienced this? What happened after?