why me?! why my baby?!!!!

Sat in bed crying myself to sleep with nobody to talk to just because my past is playing on my mind😔 
6th April 2016 I took a pregnancy test just to be on the safe side, I was 100% sure it was going to be negative but it turned out to be positive, although I was absolutely terrified and my head was all over the place seeing as I was 15 (used contraception etc lecture needed) but I suppose I came around to it, I kept it to myself until I thought I was ready to tell somebody I was alone I cried I laughed every single emotion I had. Then the night before I went to tell my bestfriend (wanted advice before telling my mam) I wiped and saw blood, instantly I knew it weren't normal! I cramped and cried, I knew it weren't good I knew what it meant and it destroyed me! The nights where I sat up crying because I had no proof to show that my baby existed, that there was a life inside of me. The tests I took the days after praying for it to say positive breaking my heart when that extra line didn't appear it. I spent nights wondering why my body weren't capable of doing something so natural, why me? I may have been young and still am but I learnt to grow up pretty damn quick, I wanted that baby and then I fail at something that many others succeed in! 
But tonight I am really feeling down, all the posts I see on facebook, photos of girls cuddling with their baby the jealousy I get and the way I have to pretend to be happy to see my friends with their babies or young siblings nieces etc, I am jealous. But I'm jealous because I should be able to hold my child, I should be able to cuddle with my child, I should be allowed to love my child and most of all, I should at least have proof that my child once was! 
If only I could trust someone enough to tell them perhaps then I could manage a bit more but having been 13 weeks pregnant losing MY BABY was 100% the worst thing in the world!
I want my baby, I never knew that you could grieve over something, someone that you've never met for so damn long! 
Apologise for writing this here but it's the only place that I can get my say and where nobody knows who I am!