How long after taking birth control pills is a delayed period considered normal?

Patient's question:

No

Doctor's answer:

Hello, it is generally not advisable to take emergency contraception more than twice a month or more than three times a year. Excessive use may lead to menstrual irregularities, so it is important to monitor your condition. If you experience menstrual irregularities, you can take Wuji Baifeng pills or traditional Chinese herbal medicine to regulate your cycle. Maintaining a positive mood and getting adequate sleep can also help restore your cycle.