Women whose cycles remain between 21 and 35 days are not likely to get pregnant if they have intercourse 3 days after their period is clean; if their periods are irregular, they may get pregnant.
For regular menstruation, the cycle to maintain between 21 ~ 35 days of women, its ovulation in the menstrual walk after the 7th ~ 10 days, and walk after 3 days of the uterine lining has not reached the normal thickness, and the probability of ovulation is also relatively low, so this time coitus is relatively low chances of pregnancy, belong to the safer time.
However, if the menstrual period is irregular or short cycle, it is possible to enter the ovulation period on the third day after the menstrual period, when there is coitus behavior may be pregnant, so women who have not prepared for pregnancy need to do a good job of contraceptive measures to avoid accidental pregnancy.
For women who do not need to have children, no matter when you need to do a good job of contraception, so as not to cause harm to the body. For more information, please consult your doctor.