fingertip dilated could mean that you are less than or about at a 1. It is the 40% effaced that would be a concern being as early as you are. If the doctor puts you on some meds to control contractions and montors you regularly i see a little chance of you making it to 40 weeks. But i would assume that you are going to go early. But hopefully the doctor can stop the dilation. I would say that as long as you don't progress then you will make it to 32-35 weeks.