There is no medical reference as to cucumbers being used to aide fertility, however this myth is about as strange as "Standing on your head after sex can increase your chances of becoming pregnant." Nevertheless, the overall health benefits of cucumbers (high-fiber) has been shown to work better in controlling diabetes and may control blood sugar levels.

However, even still, this may not decrease a womans predisposition to diabetes only apparent during pregnancy and disappears after delivery (gestational diabetes). It may, on-the-other-hand, be useful to a a pregnant woman, concidering a pregnant lactating woman's Recommended Daily Dietary Allowance in increased.

There is really no such thing as "a woman increasing her chance of getting pregnant" (Folic acid in cucumbers is very important for all women who may become pregnant); most miscarriages are sponteanous or without any known cause. If you two both see a good specialist in this field, it could ease some of the factors, including the psyche, that most often makes the difference in a fruitful marriage.

Hope this answers your question!

REFERENCE(S)

1. KidsHealth.org, Pregnancy Myths and Tales: Common Pregnancy Myths (Online: The Nemours Foundation, 2004) (Eds.) George Macones, M.D. http://www.kidshealth.org/parent/pregnancy_newborn/pregnancy/myths_tales.html

2. HealthNotes, Health Benefits & Concerns for Vegetables (Online: HealthNotes and PCC Natural Markets, 2006) http://www.pccnaturalmarkets.com/health/Food_Hbc/Vegetables_Hbc.htm

3. Office of Dietary Supplements, NIH Clinical Center, and National Institutes of Health,

Dietary Supplement Fact Sheet: Folate: Tolerable Upper Intake Levels for Folate for Children and Adults (Online: Office of Dietary Supplements, NIH Clinical Center, and National Institutes of Health, 2006) (Eds.) Lynn B. Bailey, Ph.D., et al. http://ods.od.nih.gov/factsheets/folate.asp

4. Womensfitness.net, Gestational Diabetes: Causes, Symptoms, and Management: Diet (Online: Women's Fitness Network, 2006) http://www.womenfitness.net/gestational_diabetes.htm

5. The Women's Health Site, Increased infertility with age in men and women (Online: MediSpin, Inc., 2006) http://www.thewomenshealthsite.org/article_display.jsp?ArticleID=935