Despite having no problems with ovulation, some women notice insufficient amounts of fertile mucus (watery or eggwhite mucus.) The most frequent factors disrupting the production of fertile mucus that have a negative effect both on the quality and the quantity of mucus, are: vaginal infections and sexually transmitted diseases, hormonal changes (for example, stemming from the discontinuation of birth control pills, or some other history of hormonal therapy), some antihistamines, depressants, antibiotics or some medications that stimulate ovulation, e.g. Clomid. Breastfeeding can also cause a temporary decrease of the production of cervical mucus and a general sensation of vaginal dryness. These are usually temporary problems. Remember that a lack of fertile mucus may drastically reduce your chances of becoming pregnant. That's why if you don't notice any improvement for a couple of cycles, you should talk to your doctor. Learn what are some natural ways to increase fertile mucus.