prenatal depression

i need help. i know, i’m suffering from prenatal depression. i’ll be 21 weeks tomorrow and it’s taken me so long to admit to myself that i have this. i don’t feel like myself and i haven’t in a really long time. i’m ashamed to talk to anyone about this because it makes me feel so ungrateful. pregnancy is supposed to be the happiest time in your life and i know there’s women out there dying to be in my position. i feel so stuck. i don’t want to tell my family, friends, or husband. i’m constantly crying, my anxiety is through the roof, i have zero energy to do anything, i can’t sleep, i can’t eat, and i feel so disconnected from my baby. i tried opening up to my husband but he didn’t take it very well. he doesn’t understand it. and wants a reason on why i’m depressed and i don’t have an answer for him because i don’t know myself. i don’t know what to do. all i want to do is cry and my husband being deployed doesn’t make it any better. i feel so alone.