At my 20 week u/s the tech said that it appeared my placenta was partially blocking my cervix and that I'd have to have a follow up u/s closer to my due date to see if it had moved. At my doctor's appointment today, I asked my doc for a little more information and her thoughts. She was very surprised b/c the doctor who reviewed my u/s at the Fetal Diagnostics center had said that my placenta was in front, but not low lying or blocking. She said she was going to follow up again but now I'm confused. If you were me, would you insist on the follow up u/s to be sure? Or would you take the doc's word for it if they review and think it's fine? I'm thinking that I want the follow up u/s now just for peace of mind.