I.C.
Wait for the doctor.
He/she will explain and answer all your questions.
Umbilical cords is mobile, and baby in the womb is mobile too. Things can get tangle up. It usually get's dangerous when when there's a coiled cord DURING delivery and the cord is asphyxiating the baby because the cord is still connected to the mother, and the baby is pushing out, and the cord tightens around the neck. If the coil is loose, it won't cause any problem. If the coil is tight, the problem arise. It also may cause distress in the baby while in the womb before delivery time.
The doctor will discuss with you all this. If you are still unclear, ask him/her what can happen in stages - right now, before delivery, during delivery, and the best way for delivery.
Hang in there. Get the full explanation first. Take deep breaths in between.