You can now register online to have an email alert sent to remind you (or your loved ones!) about your PMS.
When registering, the site asks questions about your specific PMS symptoms so they can send information best suited for you. Once you're signed up, you'll get an email every month on the dot.
Dealing with your own PMS is great, but alerting your significant other? I already hate when other people point out that I'm PMSing, even if I am, but what do you think? Is this worth giving it a try or do you already have enough reminders that your period is coming?