Patient's question:
Detailed medical condition and consultation purpose: I had my period from November 8th to November 13th, lasting for 6 days. Three days later, on the evening of November 16th, I had sexual intercourse without using any contraception. I calculated the safe period, and November 16th was the last day of the safe period, with November 17th being the start of the risky period. I don't know if having sex on the day before the risky period could lead to pregnancy? Is the chance high? I only took the emergency contraceptive pill in the morning of November 19th, within 72 hours.Doctor's answer:
Common methods of contraception include: taking birth control pills, using condoms, contraceptive films, the safe period method, withdrawal method, urethral compression method, surgical contraception, and so on. It is recommended to adopt other contraceptive measures, such as condoms and the safe period method. For women with regular menstrual cycles, ovulation typically occurs around 14 days before the next menstrual period. After the egg is released, it can survive for only 1 to 2 days, while sperm can survive in the vagina for 2 to 3 days. By calculating these factors, the fertile period is determined to be 4 days before ovulation and 5 days after ovulation. The days before and after the menstrual period are considered the safe period. When using the safe period method, it is necessary to measure basal body temperature for 3 months to identify the regular pattern of ovulation.