I took Plan B 6 days ago, and started bleeding like a normal period last night. It is not spotting, and it looks and feels like normal period, although I can't speak for the length of it just yet. Anyway, should I take a pregnancy test anyway, even though I've started (what I assume to be) my period? Also, I started my birth control pills last night (the first day of my period)--will they still be effective within a week? Thank you so much for your help!