When can you start having sex with out protection after starting Yaz birth control?
The booklet that comes with Yaz says that the first day you start a pack you will not have to use a back up birth control, but this is if your doing the Day 1 Start Method, because you start your active pills (light pink) on the first day of your period. However if you are doing the Sunday Start Method you will need to use a back up method until the next Sunday.
