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.
If she has a 28 pill pack, she should take all 28 pills and then start the new pack immediately. If she has a 21 pill pack, she should complete one pack, wait 7 days, and then start another pack. In both cases, the new pack should be started regardless of what day of the week it is, or what day of her period she is on.