Body being weird!!!

Sydni

Soooo i had my cycle on the 17-21st, which it was normal... so on the 1st i noticed i was cramping and spotting .. i had sex on the 30th .. i been spotting light since the 1st and not today which is the 4th it’s like brown.. is this implantation bleeding , my body trying to clean itself out, or is it something more serious ? I’m just confused! Could use anyone suggestions and options!