I give up, tired of trying :(

Why I can't get a baby? Why I can't be pregnant? Why is so hard to get something you wish? Why me? 3 years of tears, nights without sleep, angry days, 5 different doctors, hysterosalpinpogram, clomid, diets, my eyes can't sleep thinking about baby, it seems like every of my fb friend are getting pregnant, giving births, or celebrating first year of baby, why I can't? I am not going to cry no more I am sick of this!!!!!