A tool

[petronia]

http://monthlyinfo.com/

Totally free online period tracker that will generate statistical predictions and then (if you set it up) send you an email or text reminder. It's lightweight and flexible enough for all sorts of uses, but at its most basic I see it coming in handy for people whose sense of passing time gets fuzzy after two weeks, despite having done this for fully TWENTY YEARS (hint: this would be me). To be fair, my body is a loudspeaker informer of pending activities (and indeed current activities; I dunno why dudes in particular get really freaked out if you say you can feel ovulation), so I've never had to rely on memory. Too, my period is 1/2-1 week longer than most people's, though I'd have to track it for a while to know exactly.

Comments

[sub_divided]

I have one of these on my phone. I don't worry about pain/messed up clothes so much as the day *before* my period starts, when I'll be really spaced out without realizing it, and the whole day will pass and I'll do nothing but watch cat videos on youtube or whatever and feel kind of worthless. And then my period comes the next day and it's like, ah, so THAT'S what that was XD.

[narie.livejournal.com]

I'm the same on both counts - I can totally tell it's going to happen soon, my hormones are incredibly obvious, and also off the usual calendar. How funny!

[canis-m.livejournal.com]

Saaaame. I can always tell a day or two before, so why go to the trouble of counting? etc. But it would on occasion be helpful w/r/t scheduling activities to be able to predict further in advance.