Labor?

M

Currently 36w5d, and for the past 24 hours, I’ve been feeling extremely weird. For the first time in my entire pregnancy, I peed literally 6 times in a span of 8 hours overnight, without drinking water before bed. Then felt extremely lethargic and low energy all day. Woke up, ate a meal, then went back to take a 4 hour nap. Energy was completely depleted from doing absolutely nothing. Then about 30 mins ago, I’ve been feeling extreme back cramps (if that’s a thing) its back pain that radiates to my hips, slightly to my

Stomach but mainly in my back that goes up in intensity then back down and repeats. Is this a sign of labor? Or Braxton Hicks?