I'm taking the Sprintec birth control pill that have the first three rows that are blue and the last row are white pills. I just noticed that the new pack I got said "(skip placebo)". I never realized that I was taking my pills of 3 packs that have that note. What does it mean? Is it the white pills? I did not understand so the pack I am on now I skipped the white pill and started a new pack by taking the blue pill. Is this the right way to do it? Please help!