Hi, As Per My Lmp I Am Into 38th Week

Hi, as per my lmp i am into 38th week pregnancy but as per 8th week scan it’s 37 weeks where Doppler scan was done on Monday 24th sep 18 it says I am in my 35 weeks.. n Doppler shows I am having AFI 5.8cm where Doctor prescribed betnesol 12 mg 2 dose apart 24 hours n go to her today 26th September and after checking AFI AGAIN if no improvement to perform c section..my questions are with current AFI 5.8 can’t I get normal delivery?? Should I take second opinion if asked for immediate c section? Since I have already taken betnesol will waiting effect baby?