Is it possible to get pregnant while taking birth control pills?

Jul 19, 2024 Source: Cainiu Health
Disease description:

I had unprotected sex yesterday and took emergency contraceptive pills afterward. I would like to know if I could still get pregnant after taking the pills, and what should I pay attention to?

Doctor's answer (1)
Dr. Zhao Xiaodong
Taking birth control pills can reduce the risk of pregnancy, but it is not 100% effective. The following factors may affect the effectiveness of birth control pills: 1. Missing doses or not taking the pill on time: Skipping pills or taking them irregularly can reduce contraceptive effectiveness. 2. Certain drug interactions: Medications such as anticonvulsants, antibiotics (e.g., tetracycline), and anti-tuberculosis drugs may interfere with the absorption of birth control pills. 3. Nausea and vomiting: If vomiting occurs shortly after taking the pill, it may affect drug absorption. 4. Overweight or obesity: Some types of birth control pills may be less effective in women who are overweight or obese. Therefore, while birth control pills are an effective contraceptive method, it is important to be aware of their potential failure risks and to use them correctly as directed by a healthcare provider.