Gig

I had an ultrasound done at 34 weeks 5 days pregnant. The radiologist said the baby's head is measuring closer to 38 weeks gestation, and his abdomen is measuring at 34w 3.5d gestation. There is a large discrepancy between these measurements which suggests placenta failure and or deterioration. I have to be monitored closely now and have weekly ultrasound apointments. My question is, has anybody else ever had this and went on to delivering a healthy baby? I can't find any notes or web pages on this in any search engine. If you can post any resources that would be very helpful as well.