placental insufficiency

I had an appointment today and my doctor told me by baby isn't getting adequate amount of oxygen and nutrient through the bloodstream. My entire world turned upside down getting this news. My child development is in jeaopardy and even her life. I was told worst case scenario the can give me steroids to increase the development of her lungs and then take her out early. This was not part of my birth plan and I'm so afraid of losing my child. I don't know how to feel about this. My heart is so broken right now. Hopefully things can change for the better.