Trying to have another baby after a lost

I want a baby so bad me and my boyfriend have been trying for 8 months now to have another baby because we lost our first baby February 16, 2015 of this year. Everytime I get my period I get all depressed because it's not happening. And a lot of my friends and family are having babies and I'm not that when I heard that someone I know is having a baby my heart starts to hurt and I start crying. Don't get me wrong I'm happy for them but it hurts so much because I want my baby back.