3 months pp and period is not here yet??

so i’m about 3 months pp, i got my first period on august 6th. I never got a period in July and I was breastfeeding but stopped in the middle of the month. i’m suppose to start on Sept 4th which is today. i’m cramping but no period. i’m wondering if my period is just trying to get back on track? 😅🥲 anyways has this happened to anyone?

update: 09/05 negative pregnancy test

update: 09/05 my period arrived an hour after i took the test lol