Early labor?

Hey ladies! FTM I have been up all night just so uncomfortable. I definitely think I'm contracting as my stomach area is hard as a rock and then will soften. It's been doing this all night but i wouldn't say it's "painful" just uncomfortable and it's hard to tell it's happening but I can physically feel it by putting my Hand on my stomach. Other than that it feels like I have bad gas almost (I don't need to go to the bathroom though) or period cramps. Could this be the beginning of labor? Or is it just an uncomfortable pregnancy thing at 40+2 days. I don't want to call the doctor and sound silly or go in just to get sent home. Like I said I'm not in pain just really uncomfortable. Has Anybody else been through this?