Labor pains?

Been having quite a bit of lower back pain & it cramping around my sides & to my lower front more than usual for the past couple days & my stomach stays hard longer than usual as well. It usually is on & off but here this morning it's not really left. It's not super painful but it's enough to be irritating. I can be laying down relaxed or up & busy. It still happens either way. I was thinking they were Braxton hicks because I've been having those for months but I still can't differentiate real labor pains & Braxton hicks. I've been trying to stretch to make it feel better but it doesn't help much.