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.
You can start the combination pill at any time. 1  If you start combination pills within 5 days of when your period starts, youâll be protected from pregnancy right away. For example, if you get your period Monday morning, you can start the pill anytime until Saturday morning and be protected from pregnancy right away.