emergency contraception
"I took a pregnancy test on November 27th  because my fiance said I was gaining weight - the result was negative. On the 29th he came in mean so I took a plan b within 16 hours... My period was due on the 12th of December it never came I was 4 days late..so on December 16 I took 5 pregnancy test and found out I was pregnant.. So did it work ?.or was I already pregnant prior to the 27th?"