Here's what they learned from the women, who ranged in age from 17 to 40 average age Two of these three women engaged in other forms of sexual activity. Goldstein is editor-in-chief of the journal. Nearly a quarter of the women had feared that vaginal intercourse would harm their baby, but only three of the women ended up postponing intercourse until their babies were born. Continued Might the women's cultural background have affected their experiences? Get essential updates about your growing baby and what to expect each week.