Starting the pill, I have some questions!🙂

Olyana • 💛💙💛
So I just got my birth control pills. IM TAKING THEM FOR MY PERIOD/ACNE, I'm not having sex. Anyways. Can I start my first pill today? Does it make a difference on what day you start it? I'm about day 18 on my cycle.  Haven't started my period. Can I begin my very first pill tomorrow? 😜☺️😚