Contractions already

This not my first rodeo if you know what i mean. So Im having lots of pelvic pain and almost and urge to push alot. Im worried because I have a c -section scheduled already but not till Nov 4. It could be Braxton hicks but this is a nother level of pain, and its been going on for the last couple days. Any one else feel like they going into labor sooner then there due date, or having heavy cramping?