If a woman gets yeast infection once or twice a year and it is easily treated, then the only way it will affect fertility is that woman is so uncomfortable from itching and burning that she won’t be in the mood to have sexual intercourse.
However, yeast infections can change the pH level in the vagina, which can lead to difficulty conceiving. Sperm require a specific pH to survive, and the yeast infection could cause sperm to die before reaching the uterus or fallopian tube. Studies reveal that Candida albicans have sperm-immobilizing property which might lead to infertility.
It has been noted that an imbalance in vaginal flora impairs the vaginal mucosa’s ability to fight off other infections or diseases, which may lead to other fertility issues later in life.
Candida also affects the lining of uterus and could be linked to endometriosis. Women with vaginal yeast infection are often found to have an immune dysfunction causing an increase in the production of prostaglandin E2, which cause stimulation of the uterine lining (endometrium) and uterine contractions associated with endometriosis. So, Candida makes endometriosis worse.