Hello Katie,
My little boy had level 2 echogenic bowel show up on the 19 wk ultrasound. But we didn't know it until I was 28 weeks along. I am glad you are a nurse, and seem to have an OB who cares. My first OB didn't... and therefore never informed us of the abnormality. He at least noted it my file and the new OB I transferred to at 27 weeks caught it. But the echogenic bowel didn't show up again in subsequent ultrasounds, so we thought all was well.
My son ended up having meconium ileus at birth. They didn't realize what the problem was until his first exploratory surgery at 3 days old. It took 4 hours to clear the blockage. The ped. surgeon said it was the consistency of dried caulk. That was the beginning of our story... but many other things followed- supposedly unrelated to his Cystic Fibrosis. Midgut Vovulus with malrotation at 2 months, followed immediately by deep vein thrombosis that caused necrotizing enterocolitis. He had a 93.5 cm resection of the small bowel. But the anastomosis wasn't good so the damaged tissue strictured and he had to have a surgery to clear that.
As doctors put it, it was the perfect storm of circumstances for all this to happen. What has happened to him is very rare, so try not to worry too much in the mean time.
On a positive note, he has had zero lung issues and he turns one next month. He's doing incredibly well considering just 6 months ago he was having a multiple organ transplant evaluation (for liver/small bowel/pancreas). He will not need transplant at all as long as things keep going well.
You will be in my prayers. The best advice I can give is to read up on CF and only consider info from accredited sources...but you know that since you are a nurse. And get yourself a good support system of friends, church, and family- because we all need that whether we are parents of children with CF or not! Take care and please update.