Hindi necessarily, mommy! Labor can start even if you're not fully dilated pa, kaya nga may mga taong nag-labor for hours bago mag-progress ang cervix, while iba naman biglang bumukas. Since CS ka sa first baby mo, definitely usapan mo yan ng OB mo kasi bawat pregnancy is different, and importante malaman mo ang signs na dapat mong bantayan this time around so you know when to go to the hospital. A few of my mum friends who had CS din sa first baby, ang iba nag-normal delivery sa second, so possible talaga, pero the best person to guide you through it is your doctor based sa iyong specific situation!