TTC at 16....

I started ttc when i was 16, Right after me and my then boyfriend got our first place together. We were renting a house with my sister. I was working two jobs, he was working and in school full time. 
At 18, we started getting fertility testing and found out i have pcos. It explained why i hadn't had a period in two years. Metformin, Provera, birth control, and finally clomid. We got our first condo, and adopted two kitties to love while we prayed and prayed for a human. 
At 20 and 22, we've both been promoted in to management positions in a Fortune 500 company.  We are five weeks from closing on our first house. We're married and happy but still waiting for two pink lines. 
I have watched countless friends and family memeber have babies and pregnancies back to back to back, but i have never seen a second line on a pregnancy test. I always wanted to be a teen mom, i always wanted to plan and space out my kids. I always wanted a large family. 
Now I'm praying and praying "will i ever be a mother?" We tried doing it when circumstances were awful, we've tried for this baby with perfect circumstances. I guess something's are just not meant to be.