Octal - See also. 1  Computer numbering formats. 2  Octal games, a game numbering system used in combinatorial game theory. 3  Syllabic octal, a specific octal representation of 8-bit syllables.
Your doctor or nurse will suggest 1 of the following methods to begin taking the pill: Start your first pack of pills on the first day of your menstrual period. Use a backup method of birth control (such as condoms with spermicide) until you start the pill.
Begin taking your hormonal birth control. Once youâve filled your prescription, you can start using the method. If you are menstruating, you should wait until the end of your period to start these methods. Begin taking pills either on the day that you start your period or the Sunday after you start.