could labor start soon?

I'm 39 weeks. I've been needing to go to the bathroom more often, first I thought it was just because I had some coffee this morning but it was still happening this evening (TMI - very loose if you know what I mean). Then I started feeling nauseous this evening, to the point where I thought I was going to puke and felt shaky. I googled and it said it could mean labor will start in about 48 hours but it's google so I never know if it's true or not. Does anyone know if these symptoms mean labor or is it just a coincidence?