I've never had to use the "morning after pill," which is actually a couple of pills, as I recall. I need to re-read info on that. But yes, it works. It's not the same as RU-486, aka "the abortion pill," if that's a concern. I'm not anti-abortion, but I want to let you know that, in case you didn't. You can also ask your gynecologist for a prescription, so you can keep it on hand and will have it to take right after, if a condom breaks or something. Gynos usually consider this a great idea, and so do I. You don't take it unless you need to, but it's there if you feel you do.

I'm not suggesting your boyfriend is unfaithful, or any guy who says he isn't, but it's always good to protect yourself. Additionally, while a really small risk, if a guy had sex shortly before he met you and got together with you, there's a chance he contracted something (even he may not know it), so that's another reason to protect yourself.

I'm not trying to make you paranoid, but just safer.