Intercourse on the 6th day of menstruation is usually not pregnant for those who have regular menstrual cycles, and it is possible to get pregnant for those who have irregular menstrual cycles. 1. Regular menstrual cycle: in this case, the 6th day of menstruation is usually not pregnant, because at this time the follicle is not yet mature, the ovary can’t discharge the egg, and it can’t combine with the sperm to form a fertilized egg, so it won’t be pregnant. 2. Irregular menstrual cycle: If the menstrual cycle is short, intercourse on the 6th day of the menstrual cycle happens to be in the ovulation period or about 2 days after ovulation, at this time the egg is discharged, and may be combined with sperm to form a fertilized egg, it is possible to get pregnant; if the menstrual cycle is long, the 6th day of the menstrual cycle is not an ovulation, then you will not get pregnant. It is not recommended to have intercourse on the 6th day of the menstrual cycle if the period has not cleared to avoid any upward infection. If you suspect that you are pregnant, it is recommended that you seek medical attention for a blood HCG test to make a definitive diagnosis.