Phobia while pregnant....

Pasha
Hey there ladies. Im wondering if any of you share/had/is having the same "phobia"
9 years ago, while pregnant with my daughter i had this scare about the ombilical cord choking her around the neck or the ombilical cord making a knot... 
SO and I will start TTC in january and last weekend I started being scared and anxious about this again. Last night it even kept me awake until midnight... I keep telling myself that most of the time all is well and that there isnt anything I can do anyway to precent it from happening but I can't help being worried about it... Anyone feeling the same way?