Ah lepas habis 3 biji tu memang period datang, tu yang normal je, itu masa "pill-free" week, so hormone drop causes bleeding la. Tapi kalo period comes irregular or ada spotting di tengah-tengah cycle, better check dengan GP or pharmacist sebab everyone's body different, especially starting desogestrel! One of my mum friends pun had to switch brands sebab timing nya tak jibe dengan her body, so don't worry lah if yours takes a bit to settle.