I've just found out that my placenta is anterior. The only thing the sonographer told me was that it may take longer to feel the baby...I don't know anything about it impacting the birth...

Did you guys find that? (ie. feeling movements later than most)
I had an anterior placenta for my first, and I didn't feel movements till 21 weeks. Then it was non stop! I had an emergency C-section at 38 weeks (because he'd summersaulted into a position where his cord was cutting off his circulation), with no complications.