Real labor or not?

Mi

I’m 39 weeks today and was 3cm and almost all the way effaced at my appointment this morning so got a membrane sweep. Have been having contractions every 3-8 minutes since and then the past hours it’s been every 4-5 minutes apart . Could this be the start of real labor or just from the membrane sweep?

Edit/update.. thank you all for your advise! I’m happy to report it was the real deal and baby is here !!!