AM I PREGNANT?!?!?

Ti
This is my third day cramping and I was suppose to get my period Thursday, March 30th according to the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>! And I still haven't had my period and it's April 1st could I be pregnant? If I have been cramping three days in a row?