Growth scan

Getting a growth scan at 8:30 today to see how big my boy is even though it's just an estimate it's jot accurate. My doctor wants to see if the baby is gonna be too big for me to give birth to which I don't think he will be because my daughter was 7lbs 6oz and I was able to give birth to her. Let's just say my doctor is not a friendly one either...she never comes in with a smile on her face. She had asked me if I've ever considered a c section which I said no because I haven't had a complicated pregnancy so why would I consider one? Just cause I'm a small woman (4'11)? My belly measures just fine every time I go in there that's why I don't understand why she wants me to consider a c section. Of course if it is medically necessary then yes but until then no. Blahhhh. So let's hope it all turns out alright! I could use a good prayer at this point that I don't lose my sanity with this woman!