Could a yeast infection affect my fertility?

Probably not related: Candida yeast infection in a woman's vagina is a common problem. Treatments are available over-the-counter or by prescription. Yeast infection has not been shown to cause infertility, although one can imagine that during sex, sperm would have to mix with the yeast and the undesirable vaginal discharge. Fertility might decrease if man & wife stopped having enough sex due to the discharge and odor.

It's possible: Sometimes yeast can affect sperm, while other times it has no impact. It can also make it uncomfortable to have sexual relations when someone has a vaginal yeast infection.