My doctor prescribed me microgestin fe 1/20 birth control pills about a week ago to help with period cramps. She told me to start taking them the first day of my next period which is Saturday march 30th. She also told me to start with the brown pills not the white because those were the ones you're suppose to take on your period. I just picked up my pills & now I'm confused because the directions say something completely different than what she told me. Should I go by the directions or what my gyno said? And if you take these, how do you do it?