Early labor symptoms???

So for the passed 2 hours I've been getting period-like cramps. Sometimes they get worse by a little when I stand up and walk other times I can walk through them. They feel stronger though when I'm laying down on either side. I also get a very mild lower back pain when I'm feeling these cramps. I don't wanna get my hopes up too much, but could this be an early labor sign? Is it possible that sometime within the next 24 hours my baby boy will finally be here? 
Btw, I'm 39 weeks today! 💖