N.P.
My friend had this. There was a cyst on the umbilical cord and she of course, was nervous. Her doctor told her the same thing. Hers disappeared and she did not have any complications with her birth or her baby. She was also told that everything still could be fine and normal, even if it had not disappeared. Good luck.. it's just hard and scary when things happen that are unexpected. I'm sure everything will be fine!