The time of beginning of YAZ
is very simple.
1. if you start it on the first day of menses, no other contraceptive
method is needed and your are protected from pregnancy
for the entire cycle.
2. if you start it on the first Sunday after the beginning of your period, YAZ will not protect you from getting pregnant for the next seven days and you need additional method like a condom or diaphragm to prevent pregnancy for the next seven days after you start YAZ.
The pack has 28 pills with 24 active pink pills and 4 inactive pills and the next period usually begins while taking the white pills.
Any of the methods can be adopted as per your convenience.
You can start to take the pills later if you want to post pone your next period but you will need to use some other method from now on until 7 days after starting YAZ to protect against pregnancy.
Hope this was helpful.
Have a nice day.