She should see her doctor. Many women who take oral contraceptives experience sexual side effects, such as decreased desire and arousal. Sometimes, changing the medication will help. Other women may need to switch to a non-hormonal method of birth control. If they choose this option, they should know that it may take several months for their desire to return to its usual level.
It’s important to note that the oral contraceptives may not be entirely to blame. Diminished libido and arousal can have a number of other causes, including stress, fatigue, mood changes, and problems in the relationship. It may be necessary to consider these factors as well.