Here is the translation of the provided text into English: Menstruation arrived on September 14th, when is the ovulation period?

Patient's question:

No

Doctor's answer:

The date of ovulation for women is generally about 14 days before the next menstrual period. For safety, we refer to the 5 days before ovulation, the 4 days after ovulation, and ovulation itself as a total of 10 days, known as the fertile window. The rest of the time, except for the menstrual period, is called the safe period. Your fertile window should be around the 10 days before and after the 28th, which is the best time to conceive.