Hello, doctor My first period of the month came on the 16th, the second

Patient's question:

Hello, doctor
My period came on the 16th of the first month, and then on the 2nd of the second month. But in the third month, it hasn't arrived by the 10th. What could be the reason?

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 an early pregnancy test. If it's not pregnancy, it could be menstrual irregularity, and you can take Black-Bone Chicken Decoction or traditional Chinese medicine for regulation. If necessary, hormone therapy for artificial cycles can be used.