Just need somebody....

I am 20 years old hubby is 21. We have been TTC for a year now. We have been to doctors and they can't tell us we are not getting pregnant. I just don't understand what is wrong. I have so many people around me getting pregnant when they aren't even ready. I just feel like I am all alone in this battle and don't know if having kids on our is even possible. Please tell me someone else understands...