That happened to me to and my doctor said I was dilated already and having little contractions. Just let your ob know I bet your just dilating :) goodluck!
Probably just braxton Hicks. If it continued for a while I would probably call my doctor. But I wouldn't worry too much if it came and went.
If they went away then no..if they start again drink a big glass of water and lay on ur left side and start timing..I went to the hospital when I couldn't take the pain anymorr