Welcome! I'm so sorry that you're having such a tough time and that this cycle didn't cooperate with you.
I'd been told that I couldn't get pregnant, but DH and I found out that wasn't true by accident. I was on Depo, nearly died from an infection in the same cycle we conceived, had ALL sorts of repro and chronic problems, my mom was in the process of dying before what would be the end of the 2WW (if I'd been waiting for anything), my periods were coming 1.5 weeks apart, and more. Really, it shouldn't have happened. My doc wouldn't even do a blood test at first! Unfortunately, that pregnancy ended poorly at 21 1/2 weeks. DH and I started trying a couple of months after that in November 2004. Imagine our surprise that we didn't get pregnant for over a year and a half, and once we did, had repeated miscarriages and chem pregnancies. This one finally took in the cycle 2 years after we started trying!!!
So, yes, I guess is my answer. We were shocked that I even got pregnant the first time. I was really on Depo to help endometriosis.
I'm meeting more and more women who had a surprise first child, on birth control or with lots of problems, then took months and months to conceive a second. I'm glad that you have an appointment on the 18th. Maybe you can find out exactly WHY it's taking so long, or at least ensure that everything is going ok in your body. I really hope that it happens SOON for you!!!!
Again, welcome to the board!