Ah, spotting after 4 months postpartum habang mixed feeding pa lang, totally normal yan! Your body's still figuring things out, especially kung mostly formula na kayo, sometimes it takes a bit longer para bumalik ang regular period, and may random spotting pa muna before that. Pero kung patuloy-tuloy na or ang dami nakakalat, mas safe na tanungin ang OB mo lang para peace of mind, kasi bawat body talaga ang sarili naming timeline!