Is it possible for vulvovaginal candidiasis to cause infertility?

Maybe: Sperm like a slightly alkaline pH and vaginal yeast infections can alter this pH to the highly acidic side.

No: Factors that cause infertility affect ovulation, sperm parameters or tubal patency. Vulvovaginal candidiasis is not a cause for infertility.

No, unless ...: Most women have had candida "yeast infections" but they don't affect fertility. Rarely, an underlying medical condition can cause frequent infections - diabetes, or autoimmune disorders needing steroid treatment. Autoimmune disorders may be associated with recurrent miscarriage or infertility. Diabetes does not cause infertility but if poorly controlled increases miscariage and birth defect rates.