Menstruation is delayed by 4 days. Can a blood test detect pregnancy?

Patient's question:

No

Doctor's answer:

Hello, generally a delay or advancement of one week in the menstrual cycle is considered normal. In the current situation, you can wait and see. If it still hasn't arrived after another week, you can take a early pregnancy test. If it's not pregnancy, it could be menstrual irregularity, and you can take Wuji Baifeng Pills or herbal medicine for regulation. If necessary, hormone-based artificial cycle treatment can be used.