On & off cramping at 18 weeks? Help!

Melinda • First baby girl born August 6th, 2015
I'm looking for input from those who have experienced this. I've had on and off cramping that seems to be getting worse. All doctors are closed so my last option is of course, going to the ER. I'm going to go later tonight if it doesn't ease up. Can you please share your outcome if you've been through this as well? Thanks!