All four were completely different.

My first started with a hind water leak, waters then broke in a gush 24 hours later & contractions started, DD born 12 hours later.

Second labour started with BH contractions which developed into early labour, waters broke after about 24 hours & DS born 2.5 hours later.

Third labour was induced.

Fourth started with contractions early in the morning, took me a few hours to work out that it wasn't more pre-labour (after weeks of it!) Contractions lasted all day, I dilated very quickly but bub didn't descend & waters didn't break until about 10 minutes before she was born. About 8 hours of early labour & around 5hours of contractions 5 minutes apart.

Sounds like things could be moving for you, good luck!