hypercord??????

ok so when i had my ultrasound at 21 weeks they said the babys cord was shorter than it should be so i got another ultrasound to and im 34 weeks they are now saying i have hypercord which means the ambilical cord has no coil to it i have never heard of this and cant find any information on the internet about it does anyone know what this means oh yea and her cord is way shorter than it should be should i be concerned about any of this or am i freaking out for no reason if anyone can help i would really appreciate it

thanx