Thanks! I ended up going in, and I am in labor!!! Just got an epi so I feel much better.

When I had my first, the contractions just started out feeling like cramps, they gradually got way worse and felt like the worst menstrual cramps ever and lasted longer, with less time in between them. It's the same building feeling as a cramp and then fades and then comes back.... I would time them and if they get worse, close together - go in.

I hope this is it for you. Please keep us updated about what the doctor says. I'm due today as well...your giving me hope.