Anyone ever delivered preterm tell me signs and experiences ...?

I went into preterm labor with my second and i was having diarrhea the whole week before I also had my mucus plug coming out that whole week before also I was nesting same thing happened with my 3 child. With my second she came out really found us so we stayed in the hospital for a week before we got Discharge when she was under the light other then that she was healthy with my third she came out and was perfectly healthy.

I didn’t go into preterm labor but I had severe preeclampsia and had a c section at 29 weeks.