big baby!!

Ma
I'm 33+3 and my doctor has me doing serial sonograms for growth because she's been measuring big. I do not have diabetes - just genetic predisposition to large babies. 
Her estimated weight is 6lbs and her head measures 3 weeks ahead! Her weight is 85th percentile and her head is >95th percentile. 
I'm terrified of what my labor and delivery wil be like - and I've been a labor and delivery nurse for 11 years.