39 weeks nauseas

I’m 39+2 today and I woke up feeling just SICK! I was nauseas and my back hurt. 2 days ago I woke up nauseas and threw up. Is this a sign of labor? I haven’t been nauseas since first trimester. Man today I really feel like poop. I usually don’t wake up with back pains but I do commonly have them later in the day right before bed 😩 I heard you’re suppose to get a boost of energy before the baby comes but I’m super tired this whole week....