Period symptoms

BabyBlu🐼 • Mom of Irish twins

When does pms usually start for you? A week, a few days or day your period starts?

My period is due in 12 days and I've been feeling very crampy and bloated and my lower back hurts like it does when im on my period. I know it probably means ill get my period early, im just curious to see how early other women start getting period symptoms before they start?