Miscarriage and Pregnancy!

So me and my boyfriend got pregnant back in july and had a miscarriage in august, ive been devastated. We had been trying for almost a year, and it had finally happened, only he or she wasnt ready for earth. Today i found out my brother and his girlfriend are expecting a baby. I couldnt be more happy and excited for them, but deep inside it hurts so much. Why couldnt this be me?