Cramps-period or pregnancy?

Summer • I`m a Speech Pathologist TTC baby #2. I`m 27 years old with a 2 year old little girl. :)
Last night I started cramping. Mostly on one side. This morning, the cramps are still there. 
​I'm sure this means I'm about to start but, I would like to think there's a small chance I may not. 
​Has anyone had cramps in early pregnancy?
AF is due Friday