If it helps any, I've also been 2 cm and 70 percent for 2 weeks, and no one expected me to get past 34 weeks (39 and 1 day now). *hugs*
I think break-downs are normal. I had one last night! Dh and I were actually getting ready to DTD because I'd been having lots of contractions, and all of the sudden I was terrified! I remembered how much labor hurt with my older two children, and got really scared about all the changes a new baby will bring to our family. I was crying and actually said at one point, "I don't want to do this anymore!" Luckily Dh kept talking and reminding me that I would be just fine during labor and that my body knew what to do, and that even though a baby was going to change things a lot of those changes would be happy ones. I'd also forgotten while worrying about how painful labor was how exciting it is! I remember literally shaking from excitement when the nurses wheeled the little baby bed in and the anticipation of that wonderful first cry.
Keep hanging in there!