Miscarriage

I had a miscarriage on October 18, 2014. && ever since then it feels like something is missing. I see all my friends and all these children having babies and getting pregnant when their still kid themselves. Then there people who kill and beat their kids and some who just cant support them and still having them. I just dont understand why i couldn't. I feel like I done something wrong and its upsets me when I see a pregnant girl sometimes because thats all I think about. Although we are trying again I just cant understand why I lost my baby.

Does any of you ladies feel this way?