Confused

Hey guys so my cycle is every 31 days , and It saya I ovulated on day 17, on day 26 I was having light, dark brown spotting for literally like 15 minutes and then it stopped then today ..(2 days later) cycle day 29 I’m spotting again but light pink and only see it when I wipe? Is this implantation or is aunt flow coming

Never had this happen I’m confused