One slight club foot and 2 vessel umbilical cord...problem???

I was told yesterday at my ultrasound that my baby may have a club foot (her feet were crossed the whole time) and a 2 vessel umbilical cord. 
Has anyone had this? My doctor said it is linked with trisomy 13.... Her heart and everything else is perfectly normal and everything else is healthy as can be... So I'm not sure what to think of this. This is my first pregnancy (25 years old).