I was on Depo for a year. I just stopped with the shots two month ago, but my period hasn't returned. My doctor put me on some hormones to try to induce a period so that I could begin a new type of birth control. The hormones, however, didn't do their job. I told the doctor that I'd like to take a few months off of birth control anyway, due to the symptoms I experienced.

I still don't have a period - I haven't had one in probably about six months. Now, I know that it can take up to a year for the depo to get out of my system, so I'm not worried - but, I do have an important question.

My boyfriend and I used a condom, but it ended up breaking - not a situation I wanted to be in. I'm planning on taking Plan-B today, but I'm not sure how it works. Do I need to be ovulating for it to be effective? Do I need to have a normal menstruation cycle? Am I even ovulating, thanks to the lingering Depo in my system?

Any help would be appreciated.