Contractions question

Krista

Im 40 weeks

I've been having contractions from 2 pm to 11:30 pm today non stop

But they aren't getting any worse

They're a bit more intense than braxton hicks but pain wise they aren't changing at all

They have been about 9 minutes apart.

Anyone else had this? Could it be the biginning of labor just lasting a long time? Or is real labor suppose to progress faster than this???