Does taking pureiria mirifica pills 250-500 mg per day for about 3 months affect a fetus baby boy penis size or hormones when he goes into puberty?

Nobody knows: It is uncertain what harm or what good a substance will do for a breastfeeding mother and her breastfed baby, if the substance is not a real medicine, tested and tested again, approved by the FDA, and with known effects and side effects. Buyer beware. User beware. It is best to stick with real medicines, because we have more certainty about a real medicine's composition, purity, effects, etc.