I had my 37 week appointment Monday the 1st and they check me and I was .5 centimeters and 50% effaced. Tonight (Tuesday) I have been up all night with constant vagina, back and hip pain. It feels like a ton of pressure is sitting on me. I feel some relief when I sit up, or get up and walk around the house. It happens about every 10 - 30 minutes and only last a few seconds. The baby has been moving like normal. Is this just my body getting ready for labor? Are these contractions? Or is it simply nothing?