Diarrhea meaning labor soon????

I’m 30 weeks and at risk for preterm Labor. I’ve been constipated for the entire pregnancy but the last 2 days ivehad major diarrhea. Like intense ... I jut want to be prepared because there is no NICU where I live so if she comes earjy we have a fly in a medi vac jet to another state for a NICU. She is already really low and I feel tons of pressure. I’m a FTM so I don’t know what’s normal and when I should be prepared. Thanks mamas❤️