Take one pill every day.
For greatest effectiveness a woman must take pills daily and start each new pack of pills on time.
Bleeding changes are common but not harmful.
Typically, irregular bleeding for the first few months and then lighter and more regular bleeding.
Take any missed pill as soon as possible.
Missing pills risks pregnancy and may make some side effects worse.
Can be given to women at any time to start later.
If pregnancy cannot be ruled out, a provider can give her pills to take later, when her monthly bleeding begins.