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.
1 The pill will start working right away for birth control if you start on the first day of your period. 2  Start your first pack of pills on the Sunday after you start your menstrual period. 3  You should use a backup method of birth control (condoms with spermicide) until you start the pill. Use a backup method of birth control (such as condoms with spermicide) until you start the pill. 2  The pill will start working right away for birth control if you start on the first day of your period. 3  Start your first pack of pills on the Sunday after you start your menstrual period.