Whether or not you can get pregnant with a low menstrual flow that ends in a day depends on your own situation. If there are endometrial thinness, uterine cavity or cervical adhesions, endocrine disorders, etc., will affect pregnancy to a certain extent, you need to consult a doctor in time for targeted treatment, if the menstrual period is regular, ovulation is normal, and the thickness of the endometrial lining is normal, it does not affect pregnancy, we recommend that you consult a regular hospital, do not judge on your own. Low menstrual flow may be due to endometrial thinness, uterine cavity or cervical adhesions or endocrine disorders caused by anovulatory uterine bleeding, or mental stress, taking various contraceptive pills, the use of intrauterine devices, endometrial tuberculosis, etc., if you want to prepare for pregnancy, you need to carry out the relevant laboratory tests, and if you find any of the above problems, you need to timely and targeted treatment and therapy. Whether a woman can get pregnant or not is not directly related to the amount of menstruation, if menstruation is regular, ovulation is normal, endometrial thickness is normal, even if the amount of menstruation is small, it does not affect the pregnancy. Moreover, the ability to get pregnant is also related to the quality of the man’s sperm, so if you are infertile for a long period of time, you need to have the man undergo the relevant laboratory tests at the same time. If couples in the preparation stage or have any questions, you can go to a professional hospital, the professional doctor according to the specific circumstances of the relevant laboratory tests, to understand the health status of the body, professional guidance or targeted treatment, do not judge on their own, blindly use medication, in order to avoid delays or aggravation of the condition.