I personally don't believe a special diet or doing it on different days or whatever other odd things people try makes a difference. The people who try these things and then don't get the sex they hoped for (and there's heaps of them out there) will say they don't work and those who happen to get the sex they wanted will say that it worked.

Let's face it, it's a 50/50 chance of getting one or the other so there is absolutely no way of knowing if what you did before the pregnancy actually made a difference, regardless of what anyone tries to tell you.

Personally, I'm trying for one that sticks regardless of what sex they might be.