birth plan and doctors.

so since the beginning, my doctor has been saying how a csection is very likely with my daughter, because my son was only 7 pounds and 21.5 inches and he got stuck and was in distress so they had to use the kiwi, vacuum, to get him out. well baby girls estimated to be 9 pounds. so he keeps trying to "prepare" me for the very real possibility of needing a csection. i keep telling my doctor. if I need one. that's fine. but only if shes in danger, or in a wrong position or somthing. I want to TRY and have her with out needing one. I just feel like hes not listening to me, and that my birth plan isnt going to matter... like I under stand that there is a chance I cant do it. but I want to try. any one else got a doctor that is just to stubborn to listen..