Contractions from 2 pm till now am I in labor?

Mackenzie • R.I.P Baby L ❤ 1/12/15 Mommy loves you!
I'm 40 weeks and 2 days pregnant since 2 pm today I had contractions 8 to 7 minutes apart. They got closer together now. I am currently timing them 5 to 6 minutes apart right now. Could this very well be labor? They contractions go from mild to really bad back to mild than nothing but Alittle crampy. Opinions first time mommy