I am 39 weeks 5 days preg. I am having bad menstrual like cramps and horrible back pains. At my last appt, I was 3cm dilated and told that my cervix was very, very thin. When is it time to go to the hospial? I am having trouble counting contractions because the pain is constant but the very sharp pains are about 6-8 mins apart. My mother keeps saying I will know when it is time because I wont be able to talk but is it possible that my pains wont be that bad but still be a sign to go in?