contractions that don't hurt leading to labor?

Lauren
Ladies, I went to the Dr. Today and was checked. I was over 50 percent thinned and one cm dilated. Tonight I lost my mucus plug, and am having uncomfortable (but NOT painful)  contractions about ten minutes apart. Should I be concerned this is labor? I don't want to go in for nothing...seems quick to happen when I was only 1 cm dilated earlier.