I have been on yasmin for going on 4 months now. I am ending my 3rd pack. The first two packs I start taking my placebos the 19th and started my period on the 21st. Well nmw on my 3rd pack I started taking the placebos on the 16th and suppose to start tomorrow, but how is that. I have my new pack for next month ald I counted the pills until my next placebos and it says that I will start taking them on the 13th and start on the 15th. But why, what is going wrong. I take one pill the same time everyday and I have never missed a pill, but I am very confused. Can someone please answer my question.