You gotta good chance. My 16yr old was late but my 12 & 13yr olds were both super early. I just had my 1yr old last yr, and i went in labor on his due date. Had him 14mins into the next day. Good luck, hope this comes on time for ya :)
How long ago did you have your other children? You should be able to express your concerns with your ob an ask to be induced after a few days late. Goodluck!!