That's how I felt when I was in labour, too. How far along are you?
Also you can try a warm bath, see if that helps
I read in my expecting book in your 2nd and 3rd trimester your uterus practices for labor aka Braxton hicks contractions. If you have any concern I would call your provider!
That was what I felt when I was in labor. Call L&D see what they tell you to do.