Why is the due date delayed by two weeks? Is it related to the baby being small? Accurate or not

Patient's question:

No

Doctor's answer:

Hello, generally a menstrual period that is one week early or late 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 urine 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.