Spotting After period

Sino po nakaranas dito na after 1 week ng period nag spotting? Lmp: Sep 15-19 DO with hubby: 20&24 Spotting(lightpink&brownish): 27-29 posible kayang implation bleeding? or what? and then ano po resulta sainyo? nag PT ako ng 29 but negative try to do another test nextweek di po ako nagamit ng kahit anong pangontra & never po ako nagkaroon ng pahabol na period