is this labor

I am 38 week 1 day and dialated 2 cm every since monday i been cramping and havin diharrea.. Also the pain in my varginal area is starting to get really painful wen i get out of bed it hurts so bad i wanna cry and i can't sleep at all and my stomach has been tighten since yesterday.. wat could this be because my doctor said it might be from the diharrea thats why i feel this way but i don't think so and wen i go to the hosptial they always send me home.