Fetal Distress
Bleeding
Placenta previa (placenta over cervix)
Placenta abruptia (placenta coming away from uterus)
Breech (very few drs will do a vaginal breech)
Twins
Failure to progress
Deep transverse arest (baby stuck)
Prolonged labour
CPD (small pelvic outlet)

These are main reasons

Your EDD is 1 day diff to when my DS was due! but was induced early