Why is it so hard for me? 😞

I'm 17 years old and my boyfriend and I have been TTC for a year and a half. I found out at age 14 that I had an uncurable disease called PCOS and that it highly effects infertility in women along with a lot of other things. I know the reason my boyfriend and I have not gotten pregnant yet is because of me. The worst part about it is that I can't go to the doctor because they would look at me like I'm insane for wanting a child and trying to have one. I don't know what else to do. I've tried regulating my periods with birth control and tracking my ovulation. But I feel like I'm not doing something right. How can it be this hard for me? And please don't comment something like, "oh you're just a baby having a baby" "wait until your older" "buy a puppy instead". I am fully aware of my age and what I am doing. I've had a over a year and a half to go through this in my head. I'm a homeschooled senior who's graduating early, I'm looking for another job, my boyfriend gets his licenses in a month or two and a car too. Please just someone give me advise.