Does a woman's blood deficiency affect pregnancy?

There are many factors causing female infertility, pelvic factors account for 35%, including abnormal fallopian tubes, chronic salpingitis, tubal mucosal destruction, tubal blockage, hydrops and pelvic adhesions, endometriosis nodes, tuberculous pelvic inflammatory disease, endometrial lesions, uterine fibroids, genital tumors, genital tract development abnormalities. In addition, ovulation disorders also account for 25% to 35%, the main causes are persistent anovulation, polycystic ovary syndrome, premature ovarian failure and ovarian dysfunction, congenital gonadal dysplasia, hypogonadotropin gonadal dysfunction and hyperprolactinemia, follicular luteinization, follicular non-rupture syndrome. Women's qi and blood weakness, will affect pregnancy, but is not the main factor.