How did you know you were in labor?

Aside from the obvious like your water breaking and contractions, did anything happen that caused you to believe you’d be in labor that day? Having some odd aches and pains that have been coming in inconsistent waves all day but this is my first baby so I have no idea what labor feels like or what signs to even watch for again apart from the obvious breaking of the water and contractions. Any advice???? TYIA!