Contractions or nah?

Kimberly

I have had a weird few days. Tons and tons of cramping and frequent tummy tightening. Started Thursday night and the cramping hasn't stopped, but the tightening slowed down. Last night it picked up again, but it's weird. I don't feel any pain during the tightening - my stomach will suddenly go ROCK HARD for between 30-60 seconds and then release. And THEN the pain starts. It is coming only on my left side (though the rock hard tummy is all over) and goes from my back to the front of my pelvis. The pain doesn't go away. They aren't super close together yet (about 30 min), but they are regular. It's just bizarre that the pain doesn't align with the actual tightening. Anyone else experience this? Could this be early labor or is it just false labor? 37 weeks today.