Im 37 weeks today, i was out eating with my mom abd sneezed a really hard sneeze, when i did it hurt so bad, and I have been getting this tightening feeling in my stomach underneath my belly button ever since, it started feeling like a period cramp and only last for 2mins, went from 20 mins apart, to 18 to 15 abd stayed at 15 mins apart for 2 hours. Now its just a tightening feeling and is 12 mins apart. My stomach feels like a ball. Are these contractions?