fantasy world. >> kind of erotic and sensual. >> reporter: and now nine months later -- [ crying ] >> reporter: the book is being credited with its very own baby boom. >> reading "fifty shades of grey" is acting like an aphrodisiac for women putting them in the mood and they're having more sex and ultimately getting pregnant faster. ♪ i'm bringing sexy back >> reporter: bringing sexy back in the bedroom is one thing, but could the book be stirring the birds and the bees, too? according to some couples it does just that. after 14 months, carly and leroy gibson of spokane, washington, were finding trying for another baby had taken the sexy out of sex. >> yes, it was definitely a chore. >> i think the fun was taken out of it at that point in time. because you were, you are like, okay, here it is, day 14. we got five days to go. go strong. i don't care if you are tired or