NEED HELP

beep

So last nov 2 i had my last deed and its withdrawal method without protection,

nov 15 i had a period and the color was dark brown red mostly dark brown and its 5days on nov19 ita my last day but its only light spot so after that 3days ago i had cramping 2days then now i heavy cramp like 5mins before my cramping are gone so what doesnt mean? btw i take pt and its negative