I'm not going to sway you one way or another. There are benefits to testing and in some cases makes no differences whatsoever for several reasons. It depends on your reasons for wanting to know. If your ultimate goal it to know whether or not you will develop the cancer, the testing cannot tell you that; no one can.

** The link Perna posted is really valuable in your decision, no matter whether the insurance will cover it or not. **

Even if you get tested, and say you tested positive for the BRCA marker mutation, that still does not mean a definite that you will get the cancer. It is just an indication you are at higher risk for it. It takes several other cell mutations and life style factors to affect cells for cancer to develop. There is no guarantee even if you test negative for this marker that you will be cancer free either.

It just gives you an idea of what you might have in store down the road and your risk but no guarantees one way or another. It's good you are making lifestyle changes in the process and should research other things you can do whether you have the testing or not, marker being present or not.