Quoting Baby Love.:" If they are less than three minutes apart and you're having a hospital birth, I would go get checked."
Quoting Mama to William + 1:" That was my thought, too, but I called my OB and she's was more or less like, "Meh, sounds normal. Come ... [snip!] ... sense with it being 4 AM and all). I'm going nuts, though, I can't concentrate on anything and it has my back hurting, too."
Quoting Two Princesses:" I would go anyway if they don't stop. Some people can present in full on labor with relatively painless ... [snip!] ... presented with back pain. So that could possibly be a sign you could be in labor. Not entirely sure on that one. Good luck."