Not sure what this means?

Any advice or experience you could share would be great! I've been having tightening/cramping in my back for the last 2 days. Even now I would consider them light to mild. They're not extremely painful. I'm not sure if this is early labor, Braxton hicks, or the real deal. With my son I didn't have Braxton hicks I went from nothing to excruciating pain within minutes and just knew it was time. Here is what I've tracked in the last half hr to an hr I'm not sure if the intensity makes them just practice?