It could be braxton hicks (fake contractions) its to get the uterus ready for the
real contractions. They say the
fake ones can be and usualy are still a little painful...the only difference ia that they are very iregular compared to real contractions. Iv had braxton hicks since 25 weeks and now im 37.5 weeks and its starting to be a little more painful as time goes which is supposibly normal.