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.
Ask your doctor when you should start birth control pills. If you are still having your period on the day that you have been told to start your pill pack, go ahead and start the pill pack anyway. You will get your next period about 25 days after starting the pill pack.