As one who has experienced difficult pregnancies (1 miscarriage, 1 tubal pregnancy, 1 stillbirth) I know your pain, as well as your concern. I was placed on complete bedrest during my last pregnancy, from the 8th week until my son's birth. He was born 6 weeks prematurely, weighed in at 5 lbs. and 2 ozs., on the exact date of my other son's stillbirth! Yes, exactly five years later. My son was born healthy and normal, and celebrated his 15th birthday last week. In spite of my pregnancy history, I didn't worry, because I knew that God was in control of everything. I simply turned it over to Jesus, and let it go. Out of four pregnancies I have one child, and I am tremendously blessed. The Lord wiped away all of my tears, and replaced them with joy. Through the years, those experiences have enabled me to be a comfort to others suffering from the loss of a baby. For that, I am truly thankful. Just stay in prayer and trust in the Lord, realizing that with Him all things are possible.
May the Lord bless your family with a healthy baby. I will keep you in my prayers.