Patient's question:
Is it in 3 days? First follow-up question: After it ends, is the dangerous period 10 days later, or 4 days later? My period is very regular. Can ovulation occur unexpectedly when excited?Doctor's answer:
On the last day of this menstrual period, calculate the total number of days until the next menstrual period and divide it by 2. This gives the average number of days, which is then added to the 19th to determine the ovulation day. It is best to have intercourse on the 4-5 days before and after the ovulation day.