If you have intercourse on the 17th day of your period without any contraception, the chances of pregnancy are still relatively high.
The majority of women’s menstrual cycle is generally 28 to 30 days, occasionally 1 week ahead or behind is a normal performance. The usual menstrual cycle is 30 days, 14 days before the next period is just ovulation, that is, the 16th day of menstruation, if there is sex at this time, without any contraceptive measures, then the chances of pregnancy are relatively high.
Ovulation of the ovary, not necessarily at the time of ovulation, sometimes in advance, sometimes staggered. Therefore, 1 week before and after ovulation is a period of easy conception and relative risk, if you do not do any contraceptive measures to have sex, the chances of pregnancy are higher.
Women of childbearing age can choose to have intercourse during the ovulation period if they want to have children. If you do not intend to have children, it is recommended that you take proper contraceptive measures to avoid unwanted pregnancy.