I am due to start my period on Thur 2/7/13, which typically lasts until Sat or Sun. I am also going on a beachside vacation that same Thur to Sun. How can I get my period started sooner? Many, many, many years ago, I was told to take 2 active pills and then 2 more after 8 hours or 12 hours. It actually worked bec I got my period shortly after having taken the 2nd 2 pills. Can I do the same? I paid a lot for my vacation to not have a good time on the beach worrying about my menstruation and cramping. Please help.