Cramps!

Hey ladies! 
I'm 37+5 today. And lately I've been having really bad cramping. Also bad back pain. But my back hurts the most today. It's terrible, and I've been going to the bathroom like crazy! But I've been constipated so long, and now all of a sudden I go 5 times a day! My mucus plug did show not long ago, but it wasn't all of it. You think labor is sooner rather than later??