Is this preterm labor?

I’ve been having diarrhea the last few days. I think this is day four. All night my stomach hurts and feels upset. I’ve been having cramps but Ive been taking them as poop cramps. I’ve also felt my uterus feel tight a few times but took it is as Braxton Hicks. I’m 29 weeks.

I just don’t want to have to call my midwife over something like diarrhea