Contractions all morning but they aren’t painful

Ho

38 weeks Thursday with my third. Was busy at work moving stuff around/ on a ladder. Ever since(about an hour) I’ve had tummy tightenings... not painful but they are there and pretty constant. Should I attempt to track them? Or wait until they get more painful or water rupture?

Heard many times, “YOU’LL KNOW! They’re painful etc) but... Anyone been in labor without having painful contractions?