Here is the translation of the provided text into English: Menstruation came on September 8th, only on October 3-4-5 these three days.

Patient's question:

Okay, here is the translation following your instructions:
9/8 came on her period, only had sex on 3-4-5 October, it's been more than ten days later than usual, is it pregnancy?

Doctor's answer:

There are approximately 3 million sperm at the tip of an erect penis. If no contraceptive measures are taken, a woman's ovulation can be delayed or advanced due to external environmental factors, climate, her own emotions, and health status, among other factors, and there may also be extra ovulation. This makes it easier to get pregnant. It is best to take contraceptive measures and oral emergency contraception pills.