Women experience sterility for many reasons:
1. Inflammatory diseases(infections) of the reproductive organs;
2. Disturbed ovulation(disturbed hypothalamic-pituitary-ovarian axis);
3. Oversized ovarian tubes due to infections, malformations, etc.;
4. Diseases of the uterus (endometriosis, polyps, adhesions, infections, malformations, etc.);
5. Cervical disorders;
6. Vaginal disorders (vaginism, malformations, severe infections, etc.);
7. Hormonal and metabolic disorders (diabetes, thyroid disorders, suprarenal disorders, anemia, etc.);
8. Misaligned position of the genital organs;
9. Nutritive factors;
10. Immunological factors (antibodies against the spermatozoids), and
However, your husband can first request a spermogram to analyze the virility of his sperm (no matter how many children he has). It might be that he is sterile. Then, you can visit your gynecologist to request examinations that can help identify the causes of possible sterility. Several examinations can be performed: colposcopy, Pap-test, vaginal smear, vaginal ultrasound, hormonal analyses (FSH, LH, estrogen, progesterone, prolactin, thyroxin, testosterone, DHEA), HSG, laparoscopy, etc.