I stumbled across a website that talked in great length about conception, particularly listing many theories on conceiving either a girl or boy. Mostly I found them to be pretty humorous. One theory made me think... Apparently the female sperms, containing X chromosome, live longer. Therefore you could be more likely to have a girl if you do the deed 3 days before ovulation to give the slow swimming females a chance to get to the egg. If this is the case, surely those who wait for the OPK sticks to show positive before getting jiggling, are inevitably going to conceive a boy if they do manage to conceive. Interesting thinking! I'm not sure what I think personally. It's 50/50 chance as I see it. It's surprising how many theories are out there. Is anyone trying a particular theory out to conceive a specific gender? I can't say we are, I know my husband would love a girl. I on the other hand would be thrilled with another boy and equally pleased to have a girl as long as the baby is healthy.