PMSbuddy.com

If 23-25 days out of the month you have the coolest girlfriend ever, but for the other 5-7 you’re sleeping on the couch with one eye open , then you should really check out PMSbuddy.com. Sign up for free and get reminders when that time of the month is coming up. And check out the threat index on their homepage to figure out the odds that you may suffer from a PMS related experience while encountering other women.