Implant or Normal Discharge?

December 1, 2019 is the expected date of my period pero late sya ng 2 weeks bago dumating na hindi naman normal saken kasi regular ang menstruation ko. Then nagkaroon ako ng Dec. 14. During my ovulation nagkaroon kami ng intercourse, uncontrolled(Dec. 27). A week after, may lumalabas saken na pink discharge(1st day), and brown(2nd day) then white na sya after until now. Is that what they spotting or implant bleeding? Or is there a posibility na buntis ako?