Crying...alot

Did any other preemie/NICU mommies have a baby come home and cried all the time they were awake? My daughter has been home for a month now (born April 22nd) and the time she is awake all she does is cry even after a diaper change, feeding, burped. I get so overwhelmed because she cries so much sometimes to the point where she turns red and doesnt breathe. I try rocking, standing, talking, singing. Anyone else have/had this issue? And when did they grow out of it? Help! And thank you for any input :)