Confused 🤦🏻‍♀️

My periods usually last four days very occasionally five but usually not. I’m very regular and have been my whole life. My period started nine days ago- was totally normal flow the first four days, but still, several days after it was over, when I go to the bathroom there is light spotting and blood when I wipe. Not enough to really notice throughout the day but pretty obvious after using restroom. It’s sometimes light brown, sometimes pink. Just confused about what’s going on and if anyone has experienced this and can let me know :) thank you!!