Okay so i have a cruise and my time of the month is also supposed to happen at the same time, and i really dont want to have it while i go since my bf will be with me. I heard by taking bc pills 2 weeks in advance of my expected period i can skip it until after the cruise. So i started taking them a few days ago about 2 weeks before the cruise and now im getting cramps and tender breasts will the pills maybe not work at all since im already feeling the symptoms of a period.