mentrual like cramps due Nov 1st

since yesterday morning i started to feel cramping and my belly getting tight every time i felt the cramping which i thought it was just the baby balling up as she always does and i get crampy. but this time it started happening more often around 10pm bf nd i went out and i still felt the cramping and tightening every 3-5min and lasting few seconds every time. well today its been the same but not that close together as yesterday but since i woke up it was with the cramping and diarrhea this is my 5th but this never happened with my other kids