How Do I Reprogram A Clifford Alarm I Took The Emergency Abortion Pill..?

I took the emergency abortion pill..? - how do i reprogram a clifford alarm

I took the pill on the day after sex. I did not waste my time, and I fear that I'm pregnant ... How long does it take to "reprogram" my bike?
I took a pregnancy test before taking the pill, the test came up neg
A week later I took the pill gave me a pregnancy test and tested positive. I'm confused, which may be due, the pill that my hormones in all directions .. and perhaps that is triggered proof positive?