For the past three days, my stomach has been cramping up like I have to go to the bathroom, but when I go, it's usually nothing or very little. I've been pretty regular the past few weeks, so I know I'm not constipated. It feels like diarrhea pains, but without diarrhea sorry for the TMI. Is this cause for concern? I had this feeling when I went into labor with my first, I'm only 29 weeks so I hope it's not a sign of preterm labor!