Tricks to start labor

Samantha
I found out Monday that my baby is exactly 8lbs at 38 wks. My doctor told me that there are risks with me doing it naturally, and she gave me the option of c section. I'm only 5ft and very petite. I really would rather go naturally so I'm looking for ways to kick start labor!! I drink lots of water, and am very active. I'm only a fingertip dilated though. Any suggestion on how to start labor?!?