BH or baby?

This seems silly but I'm a first-timer and I can't tell if I'm feeling Braxton Hicks or baby. I'm 29 weeks and sometimes my abdomen gets hard, not all over, basically just a wide area near my belly button. Doesn't hurt at all and goes away after a minute or two. First I thought it was baby pressing his body against that side of my uterus because it feels very similar to when he presses his foot in one spot, and he's pretty active. But now I'm thinking it might be BH. What do your BH feel like?