The sixth day of menstruation intercourse generally will not be pregnant, but there are pregnant, mainly related to the length of the menstrual cycle, whether the regularity of the menstrual cycle.
For regular menstrual cycles, menstrual cycles between 28 to 30 days of women, the sixth day of menstruation follicles have not yet matured, is not yet the time of ovulation, sex is generally not pregnant.
However, if you have an irregular menstrual cycle or a shorter menstrual cycle, you may get pregnant if you have intercourse on the sixth day of menstruation. Because the irregular menstrual cycle of women, at any time there may be an accidental ovulation, or short menstrual cycle, the sixth day after menstruation may have reached ovulation, as long as there is no contraceptive measures will have the chance of pregnancy.
It is recommended that women should do a good job of reasonable contraceptive measures, such as no fertilization plan on the sixth day of menstruation should pay attention to contraception, to avoid the occurrence of unintended pregnancy.