Implantation bleeding vs Pahabol na menstruation

Base po sa experience niyo, possible po ba na tapos na yung menstruation niyo.. wala ng blood for 3-4 days after menstruation tapos biglang nagkaroon ulit ng spotting? Let say nagkaroon menstruation for 4days then nagstop bleeding for the next 3-4days. Then had intercourse tapos nakaspotting ulit 2x after 3days.