Keeping pregnant can be caused by female factors, such as vaginitis, cervical redundancy, tubal lesions, ovulation disorders, etc.; it can also be caused by male factors, such as semen abnormalities, sexual dysfunction, immune factors and so on.
1. Female factors:
(1) vaginitis: in mild cases, it does not affect conception, but in serious cases, it can reduce sperm activity and even phagocytosis of sperm, affecting fertilization.
(2) cervical redundancy: the cervix is the way for sperm to enter the uterine cavity, and polyps or fibroids can block the cervical canal and affect fertilization.
(3) Tubal lesions: the most common infertility factor, the fallopian tubes can transport sperm, pick up eggs and transport fertilized eggs to the uterine cavity, if the tubes are underdeveloped, there is inflammation or adhesions, will affect fertilization.
(4) Ovulation disorders: common diseases such as polycystic ovary syndrome, severe malnutrition, hypothalamic-pituitary-ovarian dysfunction, etc., can cause ovulation abnormalities, thus leading to infertility.
2. Male factors:
(1) Semen abnormalities: bilateral cryptorchidism, long-term malnutrition, testicular tuberculosis and other diseases can lead to azoospermia, low sperm count, poor sperm vitality and so on, thus affecting conception.
(2) Sexual dysfunction: when dysgenesis of external genitalia and impotence lead to dysfunction of sexual intercourse, it will also affect conception.
(3) Immune factors: If male sperm and seminal plasma produce antibodies against their own sperm in the body, it can cause male infertility.
In addition, aging, bad habits, etc. can also affect pregnancy. If you fail to get pregnant after more than one year of non-contraceptive sex, it is recommended that you consult a doctor in a timely manner to find out the cause of the disease and receive treatment as soon as possible.