Hello Dr.. I'm 37 Weeks ... Yesterday Ultrasound, It Is

Hello Dr.. I'm 37 weeks ... Yesterday ultrasound, it is said that presentation is cephalic and placenta posterior.. I'm with my second one. First baby is c section..Dr advices me to go for c section in 4 days... HC is 37 weeks , AC, FL and BPD shows 40 weeks... Is everything normal? No chance of normal delivery? FYI my first baby is 3 and half now.. Thank you... Expecting ur reply asap...