question: I’ve heard that a double dose of some pills can serve as an alternative to Plan B (but not all, right?). Can Marvelon be safely taken like this? My dosages have been a little inconsistent in terms of time (off between 1 to 4, once 6 hours) on various days this month and I’m worried that I reduced their effectiveness to the point where I want to double dose after having unprotected sex, just in case. Is this a dangerous overdose?