I was wondering..

So I'm 35 weeks prego. Getting pretty damn big where I can't even shave the bottom part of my legs. Anywho, I get into bed & all of a sudden I feel this painful tightness a little below my chest in the middle. My husband says it could of been a contracting but I'm unsure because of how high up it was on my body. It did last about half a min. What does this sound like to you?