Marginal Cord Insertion

Couldnt figure out why on my results from my 20 week scan it said to have another ultrasound to check growth of baby. I knew they wanted to check on a cyst so I just figured they were going to check babies growth just because I was there. Got my results from my ultrasound I had Wednesday. I have a marginal cord insertion. Which really would've been nice to have it mentioned. Now that I looked up what that meant and all of the risks that can go with it I'm panicking. Anyone else have one and everything go smoothly. Did the doctors do anything differently because of it?