Hi. I'm On A Birth Control Pill Right Now. It's

Hi. I'm on a birth control pill right now. It's called Alesse. My boyfriend and I had sex without a condom and I took the plan B pill because I'm afraid of getting pregnant. I've also been overly stressed lately and when I started taking my hormone free pills, the blood that I had only last two days and it was light. I'm wondering if that still counts as a period and I'm not pregnant?