Single umbilical artery?

When I had my 20 week ultra sound I was sent to perinatal services at the hospital because I needed a more indepth look of the baby due to prior birth defects with my first child. Well luckily, this baby doesn't suffer from that particular birth defect, however, they found that I have a SUA (single umbilical artery) meaning where a normal umbilical cord looks like mickey mouse one big vein and two arteries, I have the big vein and one artery. And the artery I have is slightly enlarged to accommodate for the lack of the second artery. My concern and question is because the artery is what supplies the oxygen, nutrients and whatnot to the baby...it can cause growth issues, low birth weight, sometimes birth defects, has anyone experienced this and if so, did you have to be induced or c-section early due to lack of growth or did you finish out your pregnancy normal? I go this Thursday and depending on what the ultrasound shows will determine whether they take the baby or I finish out normally. I am just getting others experiences and thoughts. =0)