Almost nonexistent

I have very regular cycle and typically heavy. I was scheduled to start Monday however, didn’t have any of my usual symptoms in the week prior. Late in the evening Monday I noticed just a tint of color when wiping but definitely not what I would call my period.

Anyone else have similar before what could be happening?

Usually I cramp and boobs get super sore in the week before and my body tells me it’s coming. This time I wouldn’t have known to expect it if it weren’t for app. Boobs are only slightly sore and only just started being so today. I’m 35 and have been ttc just want to be assured that this isn’t possibly start of premenopausal symptoms(yes, I’m an overthinker.lol)