Why didn't you get pregnant during ovulation?

There are many reasons for not being pregnant during ovulation, and sperm, egg quality, standardized sexual life, tubal blockage and no problems are related. More common male semen quality is too low, and the abnormality rate is high, especially if the male does not do infertility related testing, even if the same room is in ovulation, the female will not be pregnant. Moreover, the sexual life is irregular, such as waiting for ovulation to be the same day, the number of dead sperm will increase, the quality will decrease, and the probability of pregnancy after the same room is also very low. Fallopian tube blockage of women even ovulation, eggs can not reach the ampulla of the fallopian tube, can not be combined with sperm. A small number of patients will show immune problems. Their own sperm antibodies or endometrial antibodies, fertilization can not be implanted, these are the causes of infertility, need to cause attention.