Back pain and little bit of cramping

Ma

I’m 38 weeks and 5 days having really bad back pain. The pain starts from the middle of my spine and moves all over my back. And I’m having a little bit of cramping and my stomach feels tighter. I have stretch my back out, drink a lot of water, took Tylenol and took a hot bath. My back don’t seem to ease up. And the cramps come and go not painful. Am I in early Labor??