Is it starting?

Jordan • Expecting our first on 12/15/15. Can't wait to meet our baby boy 💙
I'm 36w1d. Last night I woke up around 3 am, and my stomach was so hard. I had tingling/burning pain from my lower back and up my spine, as well as tightening and then releasing of my whole uterus. Sporadic enough that timing them is close to impossible. Menstrual cramps as well. Not super painful, but uncomfortable enough to keep me awake for a couple of hours. I drank water, changed my position, went to the restroom and they still continued unlike the Braxton Hicks I have had. I was finally able to fall back asleep. Woke up this morning and it's still going on. My whole body feels sore now. I'm not in enough pain to make me think this is something I need to go to the hospital for, just wondering if this could be leading up to the "real" contractions 😁