Signs of labor?

Karissa • I'm Karissa, 21 years old, pregnant with my first child, a baby boy, who is due August 28, 2016!!
I'm due next Sunday, but I haven't had any contractions. But today I've been having extreme tighting in my stomach, with very minor cramps. Hopefully this is an early sign of labor and baby will be here soon! 🙏🏼