Feng Shui, as it relates to Fertility, is an interesting topic, and one that is close to my heart. It took us some time to conceive our sweet girl, and I strongly believe that implementing some Feng Shui changes were a big factor in us ultimately conceiving. I wrote a little about this in my very first post. Unfortunately, the link to our Real Moms, Real Stories, Real Savvy TV appearance no longer works. I imagine the show is off the air, I never saw it air on TV but had found the link to the clip online awhile back. At any rate, it was a awful lot of fun to film (and nerve-wracking!). You can read a bit about our history with Feng Shui in this first post.
What I can say about Feng Shui as a fertility aid is very much how I feel about Feng Shui in general. I will not claim that Feng Shui works miracles, but sometimes the results of shifting things just a bit can seem miraculous. If you're working with physical issues related to fertility, I would not recommend Feng Shui as a solution by itself, but more as a support aid to lend positive energy to whatever efforts you're already making. Here are some basic things you can do which can help.
If you are the mother-to-be and have challenges with fertility, position your bed so that your head points in the direction of your Tien Ye, or Health position. You need to determine your Personal Kua number to find your Tien Ye position. Read my post on Personal Kua numbers for more information and a link to a site that will help you easily determine your personal kua number.
If you are the father-to-be and have fertility challenges, position your bed so that your head points in the direction of your Tien Ye, or Health position.
If you aren't aware of fertility issues specifically and are just looking to support the conception process, go with the second positioning, that places the father's head so that it points in his Tien Ye position. The reason for this is that because the male has the more active role in conception, support for his health is considered more helpful when trying to conceive.
In our case, we needed to place our bed in the North East corner of the room, which placed it at a diagonal angle to the room. It was awkward, but we were able to make it work and it was only necessary for about 8 weeks.
Once you've conceived, you can then switch the bed to the mother's Tien Ye position, which can lend support for her health through the pregnancy. This might also be useful positioning for mothers who have difficult pregnancies.