Did my water break? due 9/21/07?

Ok, I'm due on 9/21 (tomorrow) and I woke up in the middle of the night and i noticed my sweat pants i slept in were wet. I thought maybe i just had urine leakage. so I changed.....I woke up 2 hours later and my panties were soaked. So i changed again......About 4 hours later I seen clear mucus in my panties (i lost a bloody mucus plug 2 weeks ago as well). DO YOU THINK THE WETNESS WAS MY WATER BREAKING OR JUST PEE??? I called the doctor's office and i was told that if it was my water i would still be leaking and not to worry. I am having some pain on and off. Should I not worry and not think it was my water breaking???