I was prescribed the 24 day BCP YAZ by my GP in asia.
First month was fine, but apparently I was told to take it in a way that I now know is incorrect. I was told to take for 24 days, wait for period and restart new pack on fifth day from when bleeding started.
This is obviously wrong, what I should have been doing is sticking to a 24 day cycle and taking the new packet on the 28 th day irrespective of bleeding.