During the aunt (aunt generally refers to menstruation) without contraception is generally not pregnant, but menstruation coitus is prone to intrauterine infection, pelvic inflammatory disease, etc., so although the menstrual period is generally not pregnant, but should be avoided sexual intercourse.
For women with regular menstrual cycles, endometrial shedding bleeding during menstruation, which corresponds to the early follicular growth and development stage of the ovary, there is generally no mature egg discharge, and endometrial stripping during menstruation is not conducive to the fertilization of the egg to bed, so this time to have sex is generally not pregnant.
But for women, it is not recommended to have sex during menstruation, during menstruation, the cervix is open, the endometrium has a fresh wound, if you have sex, it may lead to bacteria upstream into the uterine cavity, resulting in acute endometritis or pelvic inflammatory disease, which will lead to lower abdominal pain, lumbar and sacral pain and discomfort.
The stimulation of sexual intercourse during menstruation also leads to uterine contractions, which may result in heavy menstrual flow, prolonged menstrual period, abdominal pain and other discomforts.