I am 39 weeks and 2 days pregnant and I have some concerns?

The past 2-3 days I have had some painful 5min apart braxton hick contractions, I have been nauseated and threw up this morning. My baby girl is still moving around, but sometimes my cervix area gets these painful stings. My due date is in 5 days, but something tells me she might be here sooner. I also was told at the doctors office that if I pass a light brown or pinkish color, that i am dilating. Well then I guess the past 2 days I dilated. I havn't seen it today, but I'm wondering if I'm having what some people call a "slow labor"? Also What does it mean when the cervix area stings like that? I don't have any infections or anything.....