Webhow dilated “should” you be at 37 or 39 weeks? It’s important to remember that cervical dilation may start a few weeks before labour begins. So, if your provider observes that. Webjun 22, 2023 · with my first, i was 3cm dilated by 37 weeks but stayed 3cm until i went into labor after a membrane sweep at 39w2d. I ended up having a precipitous labor only 3. Webwhen your cervix is 60 percent effaced, it's 60 percent of the way toward becoming short and thin enough to allow your baby to pass through the uterus. Most of the effacement.