pre-term labor?

34 weeks coming up

Currently at 33 weeks but excited that everything is moving quickly, or at least to me it feels that way. I can remember when my fiance and I first found out and we had the ultra-sound done. Then I was around 6weeks 5 days!!! wow. I am concerned that my dr. was a bit off with my EDD. Could this be so? My mom had the same feeling when she was pregnant with me but of course everyone told her not to worry that the dr. couldn't be wrong and low and behold I myself was a month late. She almost lost me when they did the emergency C-section.