Contractions or strong Braxton Hicks

My husband and I just got out of a 3 hour movie and during the movie I had 4-5 strong what I think we're contractions. Normally for me Braxton Hicks are not painful just tightening of my stomach but these were slightly painful and stayed when I tried to change positions in the theater chair. We are back home now and I have had one or two Braxton Hicks but I'm wondering if this is normal or if I should expect labor to be coming soon?

I'm going to be 37 weeks tomorrow