Anyone have NO signs of impending labor before going into labor?

I had nothing until about 6 hours before my first baby was born. At that point I had a show and my contractions started. My son was born at 40 weeks exactly and until that point I had no sign he was coming. No braxton hicks at all. He didn't even engage until 12 hours before he was born. So when he did decide to come he was in an awful hurry and total labour was 6 hours.