I realize that ladies here on the board are trying to be supportive by telling about their stories, pains, and decisions. But you sound like you are still trying. And one day you may still be very pleasantly surprised. I have several friends who are trying to concive. Invitro, and other procedures, all of this is too much for the emotions.
Maybe you should go to a different doctor and look for a different opinion. I am not an expert and maybe I do not have a right to suggest. But there is a clinic in Odessa, Ukraine. I am from there and I know a lot about it. They specialize in infertility treatments and do miracles. They use natural mud, mineral water, salt caves, and definitely medical research that they've done for many years. Please check out their website. http://www.kuyalnik.com/index-e.html
The verbiage could sound a little funny, you know, things get lost in translation. But the amount of money and effort that you give could be used there in this clinic where you can always find a good translator. Maybe when you learn about their research, you can potentially look for something like this in the US.
Best of luck to you! You will be just fine no matter of the result!

