So a few days ago I had brown spotting for a day. Then today I have light pink bleeding or spotting Idk . does this mean AF? Or implantation bleeding? It literally just happened when I went to the bathroom for the 2nd time today. The first time there was nothing. Now it's light pink only when I wipe. I had sex on the 18th and 19th like my fertile days. Took a test yesterday BFN. Should I just log it as my period?