Have u ever used contraceptics and still got ur period?

Jannice
Even though we're TTC doctor recomended using contraceptics as I have a tyroid issue that causes my iron levels to be super low. So low that my dr wanted me to skip my next period while being treated to bring my iron levels up. I started the pills exactly a week ago, Wed, and was supposed to get my period today. I noticed a small amount of blood (pink) and wonder if anyone has experienced anything similar...