Idk if it’s my period

I took plan b a month ago and I got my period I think it was ? It lasted 7 days it was heavy and red. I am supposed to get my period any time now but I’m really late (obv cuz plan b fucks up your cycle) and last night i started spotting brown blood. I woke up this morning and there was red blood but it wasn’t much . Throughout the day it was just spotting like only half the pad was covered in brown red blood. No cramps no tender breasts idk what this is