Can having a pinhole cervix cause a woman not to become pregnant?

Answer 1

I was diagnosed with a pinhole/stenotic cervix two years ago. My OB-GYN stated that it was most likely congenital, given my medical history. Pregnancy was not an impossibility, but it was less likely to come about naturally. (In 10 yrs. of marriage using only natural Birth Control, I had never become pregnant-- but I cannot count this as scientific proof of anything.) In an infertility study done at the University Hospital in Groningen, Netherlands, 24 women out of a control group of 850 were diagnosed with pinhole cervix. Of these 24 women, nine were determined to have been exposed to DES (diethylstilbestrol) in utero, and four had partners with very low sperm counts. None of these thirteen women became pregnant. Of the remaining eleven women, seven were able to get pregnant either naturally or by intrauterine AIH despite the pinhole-cervix diagnosis. The study concluded that provided there was no history of DES exposure to compromise fertility, "a pin-hole cervical os....has probably no influence on fertility". (Source: http://www.ncbi.nlm.nih.gov/pubmed/2227067)