Stevia and Fertility: What you need to know
“There is evidence that steviol glycosides have contraceptive effects in both males and females. In particular, one specific steviol glycoside, called stevioside, has been shown to have potent contraceptive properties in female rats, implying that stevia may have an impact on estrogen, progesterone or both.”
I would advise not to consume products with Stevia for folks trying to get pregnant or have any hormonal imbalances. Read the article.