Hi Moreen!
First of all, the others are right in saying that bulimia reeks physical and emotional damage to all who get trapped into its vicious web.

It's a scary place to be, please becareful, and seek help for yourself now. You'll be glad that you did in the future.
As for your period, YES, bulimia can definitly effect it. I've been bulimic for longer than I can even remember, and when I was purging at my worst, I skipped my period (or had a very light spotting) for nearly 8 months. It took eating healthy to get back on track again.
Good luck, and possibly---it might be beneficial to get back on the pill. For the sheer fact that it can help regulate your cycle. I have had friends who struggled with bulimia, go on the pill during their recovery, to get their periods back on track.
Best of luck to you!!
NEVER GIVE UP
~sarah~