What Causes Severe Pain In Abdomen Along With Constipation During Pregnancy?

My daughter is 23 years old. She was born with gastroschesis. Her case was very complicated. She was in the hospital for 6 mos straight sbd underwent about 10 surgeries. She is now married and around 30 weeks pregnant. She lives in North Dakota with her husband who is stationed there in the Air Force. She started experiencing abdominal pain over a week ago. She was admitted about 5 days ago for the unbearable pain. The doctors have went in a complete circle trying to find out what is wrong. They at first said it was scar tissue, then said it was preterm labor, then constipation, and now back to scar tissue. They have given her enema s and laxatives and she still hasn t had a bowel movement and is an extreme amount of pain. They discharged her from the hospital and was told to get over the counter meds which have not worked. I have been doing research and I m convinced she has some kind of obstruction. I am so scared for her and the baby. I don t know what to do.