My sincere condolences on the loss of your brother. It doesn't seem fair at all, I totally agree. But please try not to give up on your faith in God. Faith and believing may be the things most likely to carry you through. Though I absolutely abhor cliches, think of the poem footprints, where it says, "the Lord replied," My son, My precious child, I love you and I would never leave you. During your times of trial and suffering, when you see only one set of footprints, it was then that I carried you." God never promised us an easy life or one without suffering, but we are promised the greatest reward at the end if we hold tight to our faith and believe.
And if crying is what took you over, then by all means cry, cry, cry. You can still be strong and be moved to tears, to have doubts and fears none of that takes anything from who you are or how strong you are. You have suffered a terrible loss and are more than entitled to your feelings, now, next week, next year, and the next decade.
Love and Prayers
Christi