If my average cycle is 27 days and I'm on day 29 with zero symptoms of my period showing up, am I technically late? I'm very regular. I've had a 29 day cycle once in the past year, so I guess it's possible, but normally I feel cramps for a couple days and my boobs stop being sore then I know it's starting. I know testing is the only way to know for sure, but I'm just wondering if I should be worried and if I'm considered late? I had to click "my period is late" in glow when I opened it then it changed my period due date.